blob: 67f8a3a11cfd09487cdc62073dfbfa436b4bb5ff [file] [log] [blame]
xjb04a4022021-11-25 15:01:52 +08001/*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2017 Intel Deutschland GmbH
7 * Copyright (C) 2018 Intel Corporation
8 */
9
10#include <linux/if.h>
11#include <linux/module.h>
12#include <linux/err.h>
13#include <linux/slab.h>
14#include <linux/list.h>
15#include <linux/if_ether.h>
16#include <linux/ieee80211.h>
17#include <linux/nl80211.h>
18#include <linux/rtnetlink.h>
19#include <linux/netlink.h>
20#include <linux/nospec.h>
21#include <linux/etherdevice.h>
22#include <net/net_namespace.h>
23#include <net/genetlink.h>
24#include <net/cfg80211.h>
25#include <net/sock.h>
26#include <net/inet_connection_sock.h>
27#include "core.h"
28#include "nl80211.h"
29#include "reg.h"
30#include "rdev-ops.h"
31
32static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
33 struct genl_info *info,
34 struct cfg80211_crypto_settings *settings,
35 int cipher_limit);
36
37/* the netlink family */
38static struct genl_family nl80211_fam;
39
40/* multicast groups */
41enum nl80211_multicast_groups {
42 NL80211_MCGRP_CONFIG,
43 NL80211_MCGRP_SCAN,
44 NL80211_MCGRP_REGULATORY,
45 NL80211_MCGRP_MLME,
46 NL80211_MCGRP_VENDOR,
47 NL80211_MCGRP_NAN,
48 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
49};
50
51static const struct genl_multicast_group nl80211_mcgrps[] = {
52 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
53 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
54 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
55 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
56 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
57 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
58#ifdef CONFIG_NL80211_TESTMODE
59 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
60#endif
61};
62
63/* returns ERR_PTR values */
64static struct wireless_dev *
65__cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
66{
67 struct cfg80211_registered_device *rdev;
68 struct wireless_dev *result = NULL;
69 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
70 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
71 u64 wdev_id;
72 int wiphy_idx = -1;
73 int ifidx = -1;
74
75 ASSERT_RTNL();
76
77 if (!have_ifidx && !have_wdev_id)
78 return ERR_PTR(-EINVAL);
79
80 if (have_ifidx)
81 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
82 if (have_wdev_id) {
83 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
84 wiphy_idx = wdev_id >> 32;
85 }
86
87 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
88 struct wireless_dev *wdev;
89
90 if (wiphy_net(&rdev->wiphy) != netns)
91 continue;
92
93 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
94 continue;
95
96 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
97 if (have_ifidx && wdev->netdev &&
98 wdev->netdev->ifindex == ifidx) {
99 result = wdev;
100 break;
101 }
102 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
103 result = wdev;
104 break;
105 }
106 }
107
108 if (result)
109 break;
110 }
111
112 if (result)
113 return result;
114 return ERR_PTR(-ENODEV);
115}
116
117static struct cfg80211_registered_device *
118__cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
119{
120 struct cfg80211_registered_device *rdev = NULL, *tmp;
121 struct net_device *netdev;
122
123 ASSERT_RTNL();
124
125 if (!attrs[NL80211_ATTR_WIPHY] &&
126 !attrs[NL80211_ATTR_IFINDEX] &&
127 !attrs[NL80211_ATTR_WDEV])
128 return ERR_PTR(-EINVAL);
129
130 if (attrs[NL80211_ATTR_WIPHY])
131 rdev = cfg80211_rdev_by_wiphy_idx(
132 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
133
134 if (attrs[NL80211_ATTR_WDEV]) {
135 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
136 struct wireless_dev *wdev;
137 bool found = false;
138
139 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
140 if (tmp) {
141 /* make sure wdev exists */
142 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
143 if (wdev->identifier != (u32)wdev_id)
144 continue;
145 found = true;
146 break;
147 }
148
149 if (!found)
150 tmp = NULL;
151
152 if (rdev && tmp != rdev)
153 return ERR_PTR(-EINVAL);
154 rdev = tmp;
155 }
156 }
157
158 if (attrs[NL80211_ATTR_IFINDEX]) {
159 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
160
161 netdev = __dev_get_by_index(netns, ifindex);
162 if (netdev) {
163 if (netdev->ieee80211_ptr)
164 tmp = wiphy_to_rdev(
165 netdev->ieee80211_ptr->wiphy);
166 else
167 tmp = NULL;
168
169 /* not wireless device -- return error */
170 if (!tmp)
171 return ERR_PTR(-EINVAL);
172
173 /* mismatch -- return error */
174 if (rdev && tmp != rdev)
175 return ERR_PTR(-EINVAL);
176
177 rdev = tmp;
178 }
179 }
180
181 if (!rdev)
182 return ERR_PTR(-ENODEV);
183
184 if (netns != wiphy_net(&rdev->wiphy))
185 return ERR_PTR(-ENODEV);
186
187 return rdev;
188}
189
190/*
191 * This function returns a pointer to the driver
192 * that the genl_info item that is passed refers to.
193 *
194 * The result of this can be a PTR_ERR and hence must
195 * be checked with IS_ERR() for errors.
196 */
197static struct cfg80211_registered_device *
198cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
199{
200 return __cfg80211_rdev_from_attrs(netns, info->attrs);
201}
202
203static int validate_beacon_head(const struct nlattr *attr,
204 struct netlink_ext_ack *extack)
205{
206 const u8 *data = nla_data(attr);
207 unsigned int len = nla_len(attr);
208 const struct element *elem;
209 const struct ieee80211_mgmt *mgmt = (void *)data;
210 unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
211 u.beacon.variable);
212
213 if (len < fixedlen)
214 goto err;
215
216 if (ieee80211_hdrlen(mgmt->frame_control) !=
217 offsetof(struct ieee80211_mgmt, u.beacon))
218 goto err;
219
220 data += fixedlen;
221 len -= fixedlen;
222
223 for_each_element(elem, data, len) {
224 /* nothing */
225 }
226
227 if (for_each_element_completed(elem, data, len))
228 return 0;
229
230err:
231 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
232 return -EINVAL;
233}
234
235/* policy for the attributes */
236static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
237 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
238 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
239 .len = 20-1 },
240 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
241
242 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
243 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
244 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
245 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
246 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
247
248 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
249 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
250 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
251 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
252 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
253 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
254
255 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
256 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
257 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
258
259 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
260 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
261
262 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
263 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
264 .len = WLAN_MAX_KEY_LEN },
265 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
266 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
267 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
268 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
269 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
270
271 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
272 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
273 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
274 .len = IEEE80211_MAX_DATA_LEN },
275 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
276 .len = IEEE80211_MAX_DATA_LEN },
277 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
278 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
279 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
280 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
281 .len = NL80211_MAX_SUPP_RATES },
282 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
283 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
284 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
285 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
286 .len = IEEE80211_MAX_MESH_ID_LEN },
287 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_BINARY,
288 .len = ETH_ALEN },
289
290 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
291 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
292
293 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
294 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
295 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
296 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
297 .len = NL80211_MAX_SUPP_RATES },
298 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
299
300 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
301 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
302
303 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
304
305 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
306 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
307 .len = IEEE80211_MAX_DATA_LEN },
308 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
310
311 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
312 .len = IEEE80211_MAX_SSID_LEN },
313 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
314 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
315 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
316 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
317 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
318 [NL80211_ATTR_STA_FLAGS2] = {
319 .len = sizeof(struct nl80211_sta_flag_update),
320 },
321 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
322 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
323 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
324 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
325 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
326 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
327 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
328 [NL80211_ATTR_PID] = { .type = NLA_U32 },
329 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
330 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
331 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
332 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
333 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
334 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
335 .len = IEEE80211_MAX_DATA_LEN },
336 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
337 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
338 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
339 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
340 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
341 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
342 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
343 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
344 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
345 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
346 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
347 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
348 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
349 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
350 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
351 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
352 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
353 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
354 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
355 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
356 .len = IEEE80211_MAX_DATA_LEN },
357 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
358 .len = IEEE80211_MAX_DATA_LEN },
359 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
360 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
361 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
362 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
363 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
364 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
365 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
366 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
367 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
368 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
369 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
370 .len = IEEE80211_MAX_DATA_LEN },
371 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
372 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
373 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
374 .len = NL80211_HT_CAPABILITY_LEN
375 },
376 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
377 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
378 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
379 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
380 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
381 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
382 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
383 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
384 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
385 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
386 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
387 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
388 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
389 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
390 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
391 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
392 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
393 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
394 .len = NL80211_VHT_CAPABILITY_LEN,
395 },
396 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
397 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
398 .len = IEEE80211_MAX_DATA_LEN },
399 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
400 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
401 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
402 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
403 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
404 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
405 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
406 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
407 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
408 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
409 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
410 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
411 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
412 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
413 .len = IEEE80211_QOS_MAP_LEN_MAX },
414 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
415 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
416 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
417 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
418 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
419 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
420 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
421 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
422 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
423 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
424 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
425 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
426 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
427 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
428 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
429 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
430 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
431 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
432 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
433 .len = VHT_MUMIMO_GROUPS_DATA_LEN
434 },
435 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
436 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
437 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
438 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
439 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
440 .len = FILS_MAX_KEK_LEN },
441 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
442 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
443 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
444 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
445 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
446 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
447 },
448 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
449 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
450 .len = FILS_ERP_MAX_USERNAME_LEN },
451 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
452 .len = FILS_ERP_MAX_REALM_LEN },
453 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
454 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
455 .len = FILS_ERP_MAX_RRK_LEN },
456 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
457 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
458 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
459 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
460
461 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
462 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
463 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
464 [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
465 .len = NL80211_HE_MAX_CAPABILITY_LEN },
466};
467
468/* policy for the key attributes */
469static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
470 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
471 [NL80211_KEY_IDX] = { .type = NLA_U8 },
472 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
473 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
474 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
475 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
476 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
477 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
478};
479
480/* policy for the key default flags */
481static const struct nla_policy
482nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
483 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
484 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
485};
486
487#ifdef CONFIG_PM
488/* policy for WoWLAN attributes */
489static const struct nla_policy
490nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
491 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
492 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
493 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
494 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
495 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
496 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
497 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
498 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
499 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
500 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
501};
502
503static const struct nla_policy
504nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
505 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
506 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
507 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
508 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
509 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
510 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
511 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
512 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
513 },
514 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
515 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
516 },
517 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
518 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
519 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
520};
521#endif /* CONFIG_PM */
522
523/* policy for coalesce rule attributes */
524static const struct nla_policy
525nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
526 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
527 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
528 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
529};
530
531/* policy for GTK rekey offload attributes */
532static const struct nla_policy
533nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
534 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
535 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
536 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
537};
538
539static const struct nla_policy
540nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
541 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
542 .len = IEEE80211_MAX_SSID_LEN },
543 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
544 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
545};
546
547static const struct nla_policy
548nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
549 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
550 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
551};
552
553static const struct nla_policy
554nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
555 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
556 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
557 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
558 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
559 },
560};
561
562/* policy for NAN function attributes */
563static const struct nla_policy
564nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
565 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
566 [NL80211_NAN_FUNC_SERVICE_ID] = {
567 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
568 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
569 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
570 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
571 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
572 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
573 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
574 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
575 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
576 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
577 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
578 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
579 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
580 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
581 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
582 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
583};
584
585/* policy for Service Response Filter attributes */
586static const struct nla_policy
587nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
588 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
589 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
590 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
591 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
592 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
593};
594
595/* policy for packet pattern attributes */
596static const struct nla_policy
597nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
598 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
599 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
600 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
601};
602
603static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
604 struct netlink_callback *cb,
605 struct cfg80211_registered_device **rdev,
606 struct wireless_dev **wdev)
607{
608 int err;
609
610 if (!cb->args[0]) {
611 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
612 genl_family_attrbuf(&nl80211_fam),
613 nl80211_fam.maxattr, nl80211_policy, NULL);
614 if (err)
615 return err;
616
617 *wdev = __cfg80211_wdev_from_attrs(
618 sock_net(skb->sk),
619 genl_family_attrbuf(&nl80211_fam));
620 if (IS_ERR(*wdev))
621 return PTR_ERR(*wdev);
622 *rdev = wiphy_to_rdev((*wdev)->wiphy);
623 /* 0 is the first index - add 1 to parse only once */
624 cb->args[0] = (*rdev)->wiphy_idx + 1;
625 cb->args[1] = (*wdev)->identifier;
626 } else {
627 /* subtract the 1 again here */
628 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
629 struct wireless_dev *tmp;
630
631 if (!wiphy)
632 return -ENODEV;
633 *rdev = wiphy_to_rdev(wiphy);
634 *wdev = NULL;
635
636 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
637 if (tmp->identifier == cb->args[1]) {
638 *wdev = tmp;
639 break;
640 }
641 }
642
643 if (!*wdev)
644 return -ENODEV;
645 }
646
647 return 0;
648}
649
650/* IE validation */
651static bool is_valid_ie_attr(const struct nlattr *attr)
652{
653 const u8 *pos;
654 int len;
655
656 if (!attr)
657 return true;
658
659 pos = nla_data(attr);
660 len = nla_len(attr);
661
662 while (len) {
663 u8 elemlen;
664
665 if (len < 2)
666 return false;
667 len -= 2;
668
669 elemlen = pos[1];
670 if (elemlen > len)
671 return false;
672
673 len -= elemlen;
674 pos += 2 + elemlen;
675 }
676
677 return true;
678}
679
680/* message building helper */
681static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
682 int flags, u8 cmd)
683{
684 /* since there is no private header just add the generic one */
685 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
686}
687
688static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
689 const struct ieee80211_reg_rule *rule)
690{
691 int j;
692 struct nlattr *nl_wmm_rules =
693 nla_nest_start(msg, NL80211_FREQUENCY_ATTR_WMM);
694
695 if (!nl_wmm_rules)
696 goto nla_put_failure;
697
698 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
699 struct nlattr *nl_wmm_rule = nla_nest_start(msg, j);
700
701 if (!nl_wmm_rule)
702 goto nla_put_failure;
703
704 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
705 rule->wmm_rule.client[j].cw_min) ||
706 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
707 rule->wmm_rule.client[j].cw_max) ||
708 nla_put_u8(msg, NL80211_WMMR_AIFSN,
709 rule->wmm_rule.client[j].aifsn) ||
710 nla_put_u16(msg, NL80211_WMMR_TXOP,
711 rule->wmm_rule.client[j].cot))
712 goto nla_put_failure;
713
714 nla_nest_end(msg, nl_wmm_rule);
715 }
716 nla_nest_end(msg, nl_wmm_rules);
717
718 return 0;
719
720nla_put_failure:
721 return -ENOBUFS;
722}
723
724static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
725 struct ieee80211_channel *chan,
726 bool large)
727{
728 /* Some channels must be completely excluded from the
729 * list to protect old user-space tools from breaking
730 */
731 if (!large && chan->flags &
732 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
733 return 0;
734
735 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
736 chan->center_freq))
737 goto nla_put_failure;
738
739 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
740 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
741 goto nla_put_failure;
742 if (chan->flags & IEEE80211_CHAN_NO_IR) {
743 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
744 goto nla_put_failure;
745 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
746 goto nla_put_failure;
747 }
748 if (chan->flags & IEEE80211_CHAN_RADAR) {
749 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
750 goto nla_put_failure;
751 if (large) {
752 u32 time;
753
754 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
755
756 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
757 chan->dfs_state))
758 goto nla_put_failure;
759 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
760 time))
761 goto nla_put_failure;
762 if (nla_put_u32(msg,
763 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
764 chan->dfs_cac_ms))
765 goto nla_put_failure;
766 }
767 }
768
769 if (large) {
770 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
771 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
772 goto nla_put_failure;
773 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
774 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
775 goto nla_put_failure;
776 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
777 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
778 goto nla_put_failure;
779 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
780 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
781 goto nla_put_failure;
782 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
783 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
784 goto nla_put_failure;
785 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
786 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
787 goto nla_put_failure;
788 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
789 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
790 goto nla_put_failure;
791 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
792 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
793 goto nla_put_failure;
794 }
795
796 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
797 DBM_TO_MBM(chan->max_power)))
798 goto nla_put_failure;
799
800 if (large) {
801 const struct ieee80211_reg_rule *rule =
802 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
803
804 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
805 if (nl80211_msg_put_wmm_rules(msg, rule))
806 goto nla_put_failure;
807 }
808 }
809
810 return 0;
811
812 nla_put_failure:
813 return -ENOBUFS;
814}
815
816static bool nl80211_put_txq_stats(struct sk_buff *msg,
817 struct cfg80211_txq_stats *txqstats,
818 int attrtype)
819{
820 struct nlattr *txqattr;
821
822#define PUT_TXQVAL_U32(attr, memb) do { \
823 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
824 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
825 return false; \
826 } while (0)
827
828 txqattr = nla_nest_start(msg, attrtype);
829 if (!txqattr)
830 return false;
831
832 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
833 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
834 PUT_TXQVAL_U32(FLOWS, flows);
835 PUT_TXQVAL_U32(DROPS, drops);
836 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
837 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
838 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
839 PUT_TXQVAL_U32(COLLISIONS, collisions);
840 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
841 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
842 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
843 nla_nest_end(msg, txqattr);
844
845#undef PUT_TXQVAL_U32
846 return true;
847}
848
849/* netlink command implementations */
850
851struct key_parse {
852 struct key_params p;
853 int idx;
854 int type;
855 bool def, defmgmt;
856 bool def_uni, def_multi;
857};
858
859static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
860 struct key_parse *k)
861{
862 struct nlattr *tb[NL80211_KEY_MAX + 1];
863 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
864 nl80211_key_policy, info->extack);
865 if (err)
866 return err;
867
868 k->def = !!tb[NL80211_KEY_DEFAULT];
869 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
870
871 if (k->def) {
872 k->def_uni = true;
873 k->def_multi = true;
874 }
875 if (k->defmgmt)
876 k->def_multi = true;
877
878 if (tb[NL80211_KEY_IDX])
879 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
880
881 if (tb[NL80211_KEY_DATA]) {
882 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
883 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
884 }
885
886 if (tb[NL80211_KEY_SEQ]) {
887 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
888 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
889 }
890
891 if (tb[NL80211_KEY_CIPHER])
892 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
893
894 if (tb[NL80211_KEY_TYPE]) {
895 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
896 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
897 return genl_err_attr(info, -EINVAL,
898 tb[NL80211_KEY_TYPE]);
899 }
900
901 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
902 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
903
904 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
905 tb[NL80211_KEY_DEFAULT_TYPES],
906 nl80211_key_default_policy,
907 info->extack);
908 if (err)
909 return err;
910
911 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
912 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
913 }
914
915 return 0;
916}
917
918static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
919{
920 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
921 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
922 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
923 }
924
925 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
926 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
927 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
928 }
929
930 if (info->attrs[NL80211_ATTR_KEY_IDX])
931 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
932
933 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
934 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
935
936 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
937 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
938
939 if (k->def) {
940 k->def_uni = true;
941 k->def_multi = true;
942 }
943 if (k->defmgmt)
944 k->def_multi = true;
945
946 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
947 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
948 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) {
949 GENL_SET_ERR_MSG(info, "key type out of range");
950 return -EINVAL;
951 }
952 }
953
954 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
955 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
956 int err = nla_parse_nested(kdt,
957 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
958 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
959 nl80211_key_default_policy,
960 info->extack);
961 if (err)
962 return err;
963
964 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
965 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
966 }
967
968 return 0;
969}
970
971static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
972{
973 int err;
974
975 memset(k, 0, sizeof(*k));
976 k->idx = -1;
977 k->type = -1;
978
979 if (info->attrs[NL80211_ATTR_KEY])
980 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
981 else
982 err = nl80211_parse_key_old(info, k);
983
984 if (err)
985 return err;
986
987 if (k->def && k->defmgmt) {
988 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
989 return -EINVAL;
990 }
991
992 if (k->defmgmt) {
993 if (k->def_uni || !k->def_multi) {
994 GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
995 return -EINVAL;
996 }
997 }
998
999 if (k->idx != -1) {
1000 if (k->defmgmt) {
1001 if (k->idx < 4 || k->idx > 5) {
1002 GENL_SET_ERR_MSG(info,
1003 "defmgmt key idx not 4 or 5");
1004 return -EINVAL;
1005 }
1006 } else if (k->def) {
1007 if (k->idx < 0 || k->idx > 3) {
1008 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1009 return -EINVAL;
1010 }
1011 } else {
1012 if (k->idx < 0 || k->idx > 5) {
1013 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1014 return -EINVAL;
1015 }
1016 }
1017 }
1018
1019 return 0;
1020}
1021
1022static struct cfg80211_cached_keys *
1023nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1024 struct genl_info *info, bool *no_ht)
1025{
1026 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1027 struct key_parse parse;
1028 struct nlattr *key;
1029 struct cfg80211_cached_keys *result;
1030 int rem, err, def = 0;
1031 bool have_key = false;
1032
1033 nla_for_each_nested(key, keys, rem) {
1034 have_key = true;
1035 break;
1036 }
1037
1038 if (!have_key)
1039 return NULL;
1040
1041 result = kzalloc(sizeof(*result), GFP_KERNEL);
1042 if (!result)
1043 return ERR_PTR(-ENOMEM);
1044
1045 result->def = -1;
1046
1047 nla_for_each_nested(key, keys, rem) {
1048 memset(&parse, 0, sizeof(parse));
1049 parse.idx = -1;
1050
1051 err = nl80211_parse_key_new(info, key, &parse);
1052 if (err)
1053 goto error;
1054 err = -EINVAL;
1055 if (!parse.p.key)
1056 goto error;
1057 if (parse.idx < 0 || parse.idx > 3) {
1058 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1059 goto error;
1060 }
1061 if (parse.def) {
1062 if (def) {
1063 GENL_SET_ERR_MSG(info,
1064 "only one key can be default");
1065 goto error;
1066 }
1067 def = 1;
1068 result->def = parse.idx;
1069 if (!parse.def_uni || !parse.def_multi)
1070 goto error;
1071 } else if (parse.defmgmt)
1072 goto error;
1073 err = cfg80211_validate_key_settings(rdev, &parse.p,
1074 parse.idx, false, NULL);
1075 if (err)
1076 goto error;
1077 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1078 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1079 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1080 err = -EINVAL;
1081 goto error;
1082 }
1083 result->params[parse.idx].cipher = parse.p.cipher;
1084 result->params[parse.idx].key_len = parse.p.key_len;
1085 result->params[parse.idx].key = result->data[parse.idx];
1086 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1087
1088 /* must be WEP key if we got here */
1089 if (no_ht)
1090 *no_ht = true;
1091 }
1092
1093 if (result->def < 0) {
1094 err = -EINVAL;
1095 GENL_SET_ERR_MSG(info, "need a default/TX key");
1096 goto error;
1097 }
1098
1099 return result;
1100 error:
1101 kfree(result);
1102 return ERR_PTR(err);
1103}
1104
1105static int nl80211_key_allowed(struct wireless_dev *wdev)
1106{
1107 ASSERT_WDEV_LOCK(wdev);
1108
1109 switch (wdev->iftype) {
1110 case NL80211_IFTYPE_AP:
1111 case NL80211_IFTYPE_AP_VLAN:
1112 case NL80211_IFTYPE_P2P_GO:
1113 case NL80211_IFTYPE_MESH_POINT:
1114 break;
1115 case NL80211_IFTYPE_ADHOC:
1116 case NL80211_IFTYPE_STATION:
1117 case NL80211_IFTYPE_P2P_CLIENT:
1118 if (!wdev->current_bss)
1119 return -ENOLINK;
1120 break;
1121 case NL80211_IFTYPE_UNSPECIFIED:
1122 case NL80211_IFTYPE_OCB:
1123 case NL80211_IFTYPE_MONITOR:
1124 case NL80211_IFTYPE_NAN:
1125 case NL80211_IFTYPE_P2P_DEVICE:
1126 case NL80211_IFTYPE_WDS:
1127 case NUM_NL80211_IFTYPES:
1128 return -EINVAL;
1129 }
1130
1131 return 0;
1132}
1133
1134static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1135 struct nlattr *tb)
1136{
1137 struct ieee80211_channel *chan;
1138
1139 if (tb == NULL)
1140 return NULL;
1141 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1142 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1143 return NULL;
1144 return chan;
1145}
1146
1147static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1148{
1149 struct nlattr *nl_modes = nla_nest_start(msg, attr);
1150 int i;
1151
1152 if (!nl_modes)
1153 goto nla_put_failure;
1154
1155 i = 0;
1156 while (ifmodes) {
1157 if ((ifmodes & 1) && nla_put_flag(msg, i))
1158 goto nla_put_failure;
1159 ifmodes >>= 1;
1160 i++;
1161 }
1162
1163 nla_nest_end(msg, nl_modes);
1164 return 0;
1165
1166nla_put_failure:
1167 return -ENOBUFS;
1168}
1169
1170static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1171 struct sk_buff *msg,
1172 bool large)
1173{
1174 struct nlattr *nl_combis;
1175 int i, j;
1176
1177 nl_combis = nla_nest_start(msg,
1178 NL80211_ATTR_INTERFACE_COMBINATIONS);
1179 if (!nl_combis)
1180 goto nla_put_failure;
1181
1182 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1183 const struct ieee80211_iface_combination *c;
1184 struct nlattr *nl_combi, *nl_limits;
1185
1186 c = &wiphy->iface_combinations[i];
1187
1188 nl_combi = nla_nest_start(msg, i + 1);
1189 if (!nl_combi)
1190 goto nla_put_failure;
1191
1192 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1193 if (!nl_limits)
1194 goto nla_put_failure;
1195
1196 for (j = 0; j < c->n_limits; j++) {
1197 struct nlattr *nl_limit;
1198
1199 nl_limit = nla_nest_start(msg, j + 1);
1200 if (!nl_limit)
1201 goto nla_put_failure;
1202 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1203 c->limits[j].max))
1204 goto nla_put_failure;
1205 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1206 c->limits[j].types))
1207 goto nla_put_failure;
1208 nla_nest_end(msg, nl_limit);
1209 }
1210
1211 nla_nest_end(msg, nl_limits);
1212
1213 if (c->beacon_int_infra_match &&
1214 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1215 goto nla_put_failure;
1216 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1217 c->num_different_channels) ||
1218 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1219 c->max_interfaces))
1220 goto nla_put_failure;
1221 if (large &&
1222 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1223 c->radar_detect_widths) ||
1224 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1225 c->radar_detect_regions)))
1226 goto nla_put_failure;
1227 if (c->beacon_int_min_gcd &&
1228 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1229 c->beacon_int_min_gcd))
1230 goto nla_put_failure;
1231
1232 nla_nest_end(msg, nl_combi);
1233 }
1234
1235 nla_nest_end(msg, nl_combis);
1236
1237 return 0;
1238nla_put_failure:
1239 return -ENOBUFS;
1240}
1241
1242#ifdef CONFIG_PM
1243static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1244 struct sk_buff *msg)
1245{
1246 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1247 struct nlattr *nl_tcp;
1248
1249 if (!tcp)
1250 return 0;
1251
1252 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1253 if (!nl_tcp)
1254 return -ENOBUFS;
1255
1256 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1257 tcp->data_payload_max))
1258 return -ENOBUFS;
1259
1260 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1261 tcp->data_payload_max))
1262 return -ENOBUFS;
1263
1264 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1265 return -ENOBUFS;
1266
1267 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1268 sizeof(*tcp->tok), tcp->tok))
1269 return -ENOBUFS;
1270
1271 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1272 tcp->data_interval_max))
1273 return -ENOBUFS;
1274
1275 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1276 tcp->wake_payload_max))
1277 return -ENOBUFS;
1278
1279 nla_nest_end(msg, nl_tcp);
1280 return 0;
1281}
1282
1283static int nl80211_send_wowlan(struct sk_buff *msg,
1284 struct cfg80211_registered_device *rdev,
1285 bool large)
1286{
1287 struct nlattr *nl_wowlan;
1288
1289 if (!rdev->wiphy.wowlan)
1290 return 0;
1291
1292 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1293 if (!nl_wowlan)
1294 return -ENOBUFS;
1295
1296 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1297 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1298 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1299 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1300 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1301 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1302 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1303 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1304 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1305 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1306 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1307 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1308 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1309 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1310 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1311 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1312 return -ENOBUFS;
1313
1314 if (rdev->wiphy.wowlan->n_patterns) {
1315 struct nl80211_pattern_support pat = {
1316 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1317 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1318 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1319 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1320 };
1321
1322 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1323 sizeof(pat), &pat))
1324 return -ENOBUFS;
1325 }
1326
1327 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1328 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1329 rdev->wiphy.wowlan->max_nd_match_sets))
1330 return -ENOBUFS;
1331
1332 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1333 return -ENOBUFS;
1334
1335 nla_nest_end(msg, nl_wowlan);
1336
1337 return 0;
1338}
1339#endif
1340
1341static int nl80211_send_coalesce(struct sk_buff *msg,
1342 struct cfg80211_registered_device *rdev)
1343{
1344 struct nl80211_coalesce_rule_support rule;
1345
1346 if (!rdev->wiphy.coalesce)
1347 return 0;
1348
1349 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1350 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1351 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1352 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1353 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1354 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1355
1356 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1357 return -ENOBUFS;
1358
1359 return 0;
1360}
1361
1362static int
1363nl80211_send_iftype_data(struct sk_buff *msg,
1364 const struct ieee80211_sband_iftype_data *iftdata)
1365{
1366 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1367
1368 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1369 iftdata->types_mask))
1370 return -ENOBUFS;
1371
1372 if (he_cap->has_he) {
1373 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1374 sizeof(he_cap->he_cap_elem.mac_cap_info),
1375 he_cap->he_cap_elem.mac_cap_info) ||
1376 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1377 sizeof(he_cap->he_cap_elem.phy_cap_info),
1378 he_cap->he_cap_elem.phy_cap_info) ||
1379 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1380 sizeof(he_cap->he_mcs_nss_supp),
1381 &he_cap->he_mcs_nss_supp) ||
1382 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1383 sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1384 return -ENOBUFS;
1385 }
1386
1387 return 0;
1388}
1389
1390static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1391 struct ieee80211_supported_band *sband)
1392{
1393 struct nlattr *nl_rates, *nl_rate;
1394 struct ieee80211_rate *rate;
1395 int i;
1396
1397 /* add HT info */
1398 if (sband->ht_cap.ht_supported &&
1399 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1400 sizeof(sband->ht_cap.mcs),
1401 &sband->ht_cap.mcs) ||
1402 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1403 sband->ht_cap.cap) ||
1404 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1405 sband->ht_cap.ampdu_factor) ||
1406 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1407 sband->ht_cap.ampdu_density)))
1408 return -ENOBUFS;
1409
1410 /* add VHT info */
1411 if (sband->vht_cap.vht_supported &&
1412 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1413 sizeof(sband->vht_cap.vht_mcs),
1414 &sband->vht_cap.vht_mcs) ||
1415 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1416 sband->vht_cap.cap)))
1417 return -ENOBUFS;
1418
1419 if (sband->n_iftype_data) {
1420 struct nlattr *nl_iftype_data =
1421 nla_nest_start(msg, NL80211_BAND_ATTR_IFTYPE_DATA);
1422 int err;
1423
1424 if (!nl_iftype_data)
1425 return -ENOBUFS;
1426
1427 for (i = 0; i < sband->n_iftype_data; i++) {
1428 struct nlattr *iftdata;
1429
1430 iftdata = nla_nest_start(msg, i + 1);
1431 if (!iftdata)
1432 return -ENOBUFS;
1433
1434 err = nl80211_send_iftype_data(msg,
1435 &sband->iftype_data[i]);
1436 if (err)
1437 return err;
1438
1439 nla_nest_end(msg, iftdata);
1440 }
1441
1442 nla_nest_end(msg, nl_iftype_data);
1443 }
1444
1445 /* add bitrates */
1446 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1447 if (!nl_rates)
1448 return -ENOBUFS;
1449
1450 for (i = 0; i < sband->n_bitrates; i++) {
1451 nl_rate = nla_nest_start(msg, i);
1452 if (!nl_rate)
1453 return -ENOBUFS;
1454
1455 rate = &sband->bitrates[i];
1456 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1457 rate->bitrate))
1458 return -ENOBUFS;
1459 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1460 nla_put_flag(msg,
1461 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1462 return -ENOBUFS;
1463
1464 nla_nest_end(msg, nl_rate);
1465 }
1466
1467 nla_nest_end(msg, nl_rates);
1468
1469 return 0;
1470}
1471
1472static int
1473nl80211_send_mgmt_stypes(struct sk_buff *msg,
1474 const struct ieee80211_txrx_stypes *mgmt_stypes)
1475{
1476 u16 stypes;
1477 struct nlattr *nl_ftypes, *nl_ifs;
1478 enum nl80211_iftype ift;
1479 int i;
1480
1481 if (!mgmt_stypes)
1482 return 0;
1483
1484 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1485 if (!nl_ifs)
1486 return -ENOBUFS;
1487
1488 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1489 nl_ftypes = nla_nest_start(msg, ift);
1490 if (!nl_ftypes)
1491 return -ENOBUFS;
1492 i = 0;
1493 stypes = mgmt_stypes[ift].tx;
1494 while (stypes) {
1495 if ((stypes & 1) &&
1496 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1497 (i << 4) | IEEE80211_FTYPE_MGMT))
1498 return -ENOBUFS;
1499 stypes >>= 1;
1500 i++;
1501 }
1502 nla_nest_end(msg, nl_ftypes);
1503 }
1504
1505 nla_nest_end(msg, nl_ifs);
1506
1507 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1508 if (!nl_ifs)
1509 return -ENOBUFS;
1510
1511 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1512 nl_ftypes = nla_nest_start(msg, ift);
1513 if (!nl_ftypes)
1514 return -ENOBUFS;
1515 i = 0;
1516 stypes = mgmt_stypes[ift].rx;
1517 while (stypes) {
1518 if ((stypes & 1) &&
1519 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1520 (i << 4) | IEEE80211_FTYPE_MGMT))
1521 return -ENOBUFS;
1522 stypes >>= 1;
1523 i++;
1524 }
1525 nla_nest_end(msg, nl_ftypes);
1526 }
1527 nla_nest_end(msg, nl_ifs);
1528
1529 return 0;
1530}
1531
1532#define CMD(op, n) \
1533 do { \
1534 if (rdev->ops->op) { \
1535 i++; \
1536 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1537 goto nla_put_failure; \
1538 } \
1539 } while (0)
1540
1541static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1542 struct sk_buff *msg)
1543{
1544 int i = 0;
1545
1546 /*
1547 * do *NOT* add anything into this function, new things need to be
1548 * advertised only to new versions of userspace that can deal with
1549 * the split (and they can't possibly care about new features...
1550 */
1551 CMD(add_virtual_intf, NEW_INTERFACE);
1552 CMD(change_virtual_intf, SET_INTERFACE);
1553 CMD(add_key, NEW_KEY);
1554 CMD(start_ap, START_AP);
1555 CMD(add_station, NEW_STATION);
1556 CMD(add_mpath, NEW_MPATH);
1557 CMD(update_mesh_config, SET_MESH_CONFIG);
1558 CMD(change_bss, SET_BSS);
1559 CMD(auth, AUTHENTICATE);
1560 CMD(assoc, ASSOCIATE);
1561 CMD(deauth, DEAUTHENTICATE);
1562 CMD(disassoc, DISASSOCIATE);
1563 CMD(join_ibss, JOIN_IBSS);
1564 CMD(join_mesh, JOIN_MESH);
1565 CMD(set_pmksa, SET_PMKSA);
1566 CMD(del_pmksa, DEL_PMKSA);
1567 CMD(flush_pmksa, FLUSH_PMKSA);
1568 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1569 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1570 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1571 CMD(mgmt_tx, FRAME);
1572 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1573 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1574 i++;
1575 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1576 goto nla_put_failure;
1577 }
1578 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1579 rdev->ops->join_mesh) {
1580 i++;
1581 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1582 goto nla_put_failure;
1583 }
1584 CMD(set_wds_peer, SET_WDS_PEER);
1585 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1586 CMD(tdls_mgmt, TDLS_MGMT);
1587 CMD(tdls_oper, TDLS_OPER);
1588 }
1589 if (rdev->wiphy.max_sched_scan_reqs)
1590 CMD(sched_scan_start, START_SCHED_SCAN);
1591 CMD(probe_client, PROBE_CLIENT);
1592 CMD(set_noack_map, SET_NOACK_MAP);
1593 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1594 i++;
1595 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1596 goto nla_put_failure;
1597 }
1598 CMD(start_p2p_device, START_P2P_DEVICE);
1599 CMD(set_mcast_rate, SET_MCAST_RATE);
1600#ifdef CONFIG_NL80211_TESTMODE
1601 CMD(testmode_cmd, TESTMODE);
1602#endif
1603
1604 if (rdev->ops->connect || rdev->ops->auth) {
1605 i++;
1606 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1607 goto nla_put_failure;
1608 }
1609
1610 if (rdev->ops->disconnect || rdev->ops->deauth) {
1611 i++;
1612 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1613 goto nla_put_failure;
1614 }
1615
1616 return i;
1617 nla_put_failure:
1618 return -ENOBUFS;
1619}
1620
1621struct nl80211_dump_wiphy_state {
1622 s64 filter_wiphy;
1623 long start;
1624 long split_start, band_start, chan_start, capa_start;
1625 bool split;
1626};
1627
1628static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1629 enum nl80211_commands cmd,
1630 struct sk_buff *msg, u32 portid, u32 seq,
1631 int flags, struct nl80211_dump_wiphy_state *state)
1632{
1633 void *hdr;
1634 struct nlattr *nl_bands, *nl_band;
1635 struct nlattr *nl_freqs, *nl_freq;
1636 struct nlattr *nl_cmds;
1637 enum nl80211_band band;
1638 struct ieee80211_channel *chan;
1639 int i;
1640 const struct ieee80211_txrx_stypes *mgmt_stypes =
1641 rdev->wiphy.mgmt_stypes;
1642 u32 features;
1643
1644 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1645 if (!hdr)
1646 return -ENOBUFS;
1647
1648 if (WARN_ON(!state))
1649 return -EINVAL;
1650
1651 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1652 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1653 wiphy_name(&rdev->wiphy)) ||
1654 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1655 cfg80211_rdev_list_generation))
1656 goto nla_put_failure;
1657
1658 if (cmd != NL80211_CMD_NEW_WIPHY)
1659 goto finish;
1660
1661 switch (state->split_start) {
1662 case 0:
1663 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1664 rdev->wiphy.retry_short) ||
1665 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1666 rdev->wiphy.retry_long) ||
1667 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1668 rdev->wiphy.frag_threshold) ||
1669 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1670 rdev->wiphy.rts_threshold) ||
1671 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1672 rdev->wiphy.coverage_class) ||
1673 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1674 rdev->wiphy.max_scan_ssids) ||
1675 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1676 rdev->wiphy.max_sched_scan_ssids) ||
1677 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1678 rdev->wiphy.max_scan_ie_len) ||
1679 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1680 rdev->wiphy.max_sched_scan_ie_len) ||
1681 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1682 rdev->wiphy.max_match_sets) ||
1683 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1684 rdev->wiphy.max_sched_scan_plans) ||
1685 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1686 rdev->wiphy.max_sched_scan_plan_interval) ||
1687 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1688 rdev->wiphy.max_sched_scan_plan_iterations))
1689 goto nla_put_failure;
1690
1691 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1692 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1693 goto nla_put_failure;
1694 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1695 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1696 goto nla_put_failure;
1697 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1698 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1699 goto nla_put_failure;
1700 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1701 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1702 goto nla_put_failure;
1703 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1704 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1705 goto nla_put_failure;
1706 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1707 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1708 goto nla_put_failure;
1709 state->split_start++;
1710 if (state->split)
1711 break;
1712 case 1:
1713 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1714 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1715 rdev->wiphy.cipher_suites))
1716 goto nla_put_failure;
1717
1718 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1719 rdev->wiphy.max_num_pmkids))
1720 goto nla_put_failure;
1721
1722 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1723 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1724 goto nla_put_failure;
1725
1726 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1727 rdev->wiphy.available_antennas_tx) ||
1728 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1729 rdev->wiphy.available_antennas_rx))
1730 goto nla_put_failure;
1731
1732 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1733 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1734 rdev->wiphy.probe_resp_offload))
1735 goto nla_put_failure;
1736
1737 if ((rdev->wiphy.available_antennas_tx ||
1738 rdev->wiphy.available_antennas_rx) &&
1739 rdev->ops->get_antenna) {
1740 u32 tx_ant = 0, rx_ant = 0;
1741 int res;
1742
1743 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1744 if (!res) {
1745 if (nla_put_u32(msg,
1746 NL80211_ATTR_WIPHY_ANTENNA_TX,
1747 tx_ant) ||
1748 nla_put_u32(msg,
1749 NL80211_ATTR_WIPHY_ANTENNA_RX,
1750 rx_ant))
1751 goto nla_put_failure;
1752 }
1753 }
1754
1755 state->split_start++;
1756 if (state->split)
1757 break;
1758 case 2:
1759 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1760 rdev->wiphy.interface_modes))
1761 goto nla_put_failure;
1762 state->split_start++;
1763 if (state->split)
1764 break;
1765 case 3:
1766 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1767 if (!nl_bands)
1768 goto nla_put_failure;
1769
1770 for (band = state->band_start;
1771 band < NUM_NL80211_BANDS; band++) {
1772 struct ieee80211_supported_band *sband;
1773
1774 sband = rdev->wiphy.bands[band];
1775
1776 if (!sband)
1777 continue;
1778
1779 nl_band = nla_nest_start(msg, band);
1780 if (!nl_band)
1781 goto nla_put_failure;
1782
1783 switch (state->chan_start) {
1784 case 0:
1785 if (nl80211_send_band_rateinfo(msg, sband))
1786 goto nla_put_failure;
1787 state->chan_start++;
1788 if (state->split)
1789 break;
1790 default:
1791 /* add frequencies */
1792 nl_freqs = nla_nest_start(
1793 msg, NL80211_BAND_ATTR_FREQS);
1794 if (!nl_freqs)
1795 goto nla_put_failure;
1796
1797 for (i = state->chan_start - 1;
1798 i < sband->n_channels;
1799 i++) {
1800 nl_freq = nla_nest_start(msg, i);
1801 if (!nl_freq)
1802 goto nla_put_failure;
1803
1804 chan = &sband->channels[i];
1805
1806 if (nl80211_msg_put_channel(
1807 msg, &rdev->wiphy, chan,
1808 state->split))
1809 goto nla_put_failure;
1810
1811 nla_nest_end(msg, nl_freq);
1812 if (state->split)
1813 break;
1814 }
1815 if (i < sband->n_channels)
1816 state->chan_start = i + 2;
1817 else
1818 state->chan_start = 0;
1819 nla_nest_end(msg, nl_freqs);
1820 }
1821
1822 nla_nest_end(msg, nl_band);
1823
1824 if (state->split) {
1825 /* start again here */
1826 if (state->chan_start)
1827 band--;
1828 break;
1829 }
1830 }
1831 nla_nest_end(msg, nl_bands);
1832
1833 if (band < NUM_NL80211_BANDS)
1834 state->band_start = band + 1;
1835 else
1836 state->band_start = 0;
1837
1838 /* if bands & channels are done, continue outside */
1839 if (state->band_start == 0 && state->chan_start == 0)
1840 state->split_start++;
1841 if (state->split)
1842 break;
1843 case 4:
1844 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1845 if (!nl_cmds)
1846 goto nla_put_failure;
1847
1848 i = nl80211_add_commands_unsplit(rdev, msg);
1849 if (i < 0)
1850 goto nla_put_failure;
1851 if (state->split) {
1852 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1853 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1854 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1855 CMD(channel_switch, CHANNEL_SWITCH);
1856 CMD(set_qos_map, SET_QOS_MAP);
1857 if (rdev->wiphy.features &
1858 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1859 CMD(add_tx_ts, ADD_TX_TS);
1860 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1861 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1862 }
1863#undef CMD
1864
1865 nla_nest_end(msg, nl_cmds);
1866 state->split_start++;
1867 if (state->split)
1868 break;
1869 case 5:
1870 if (rdev->ops->remain_on_channel &&
1871 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1872 nla_put_u32(msg,
1873 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1874 rdev->wiphy.max_remain_on_channel_duration))
1875 goto nla_put_failure;
1876
1877 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1878 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1879 goto nla_put_failure;
1880
1881 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1882 goto nla_put_failure;
1883 state->split_start++;
1884 if (state->split)
1885 break;
1886 case 6:
1887#ifdef CONFIG_PM
1888 if (nl80211_send_wowlan(msg, rdev, state->split))
1889 goto nla_put_failure;
1890 state->split_start++;
1891 if (state->split)
1892 break;
1893#else
1894 state->split_start++;
1895#endif
1896 case 7:
1897 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1898 rdev->wiphy.software_iftypes))
1899 goto nla_put_failure;
1900
1901 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1902 state->split))
1903 goto nla_put_failure;
1904
1905 state->split_start++;
1906 if (state->split)
1907 break;
1908 case 8:
1909 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1910 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1911 rdev->wiphy.ap_sme_capa))
1912 goto nla_put_failure;
1913
1914 features = rdev->wiphy.features;
1915 /*
1916 * We can only add the per-channel limit information if the
1917 * dump is split, otherwise it makes it too big. Therefore
1918 * only advertise it in that case.
1919 */
1920 if (state->split)
1921 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1922 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1923 goto nla_put_failure;
1924
1925 if (rdev->wiphy.ht_capa_mod_mask &&
1926 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1927 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1928 rdev->wiphy.ht_capa_mod_mask))
1929 goto nla_put_failure;
1930
1931 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1932 rdev->wiphy.max_acl_mac_addrs &&
1933 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1934 rdev->wiphy.max_acl_mac_addrs))
1935 goto nla_put_failure;
1936
1937 /*
1938 * Any information below this point is only available to
1939 * applications that can deal with it being split. This
1940 * helps ensure that newly added capabilities don't break
1941 * older tools by overrunning their buffers.
1942 *
1943 * We still increment split_start so that in the split
1944 * case we'll continue with more data in the next round,
1945 * but break unconditionally so unsplit data stops here.
1946 */
1947 state->split_start++;
1948 break;
1949 case 9:
1950 if (rdev->wiphy.extended_capabilities &&
1951 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1952 rdev->wiphy.extended_capabilities_len,
1953 rdev->wiphy.extended_capabilities) ||
1954 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1955 rdev->wiphy.extended_capabilities_len,
1956 rdev->wiphy.extended_capabilities_mask)))
1957 goto nla_put_failure;
1958
1959 if (rdev->wiphy.vht_capa_mod_mask &&
1960 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1961 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1962 rdev->wiphy.vht_capa_mod_mask))
1963 goto nla_put_failure;
1964
1965 state->split_start++;
1966 break;
1967 case 10:
1968 if (nl80211_send_coalesce(msg, rdev))
1969 goto nla_put_failure;
1970
1971 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1972 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1973 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1974 goto nla_put_failure;
1975
1976 if (rdev->wiphy.max_ap_assoc_sta &&
1977 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1978 rdev->wiphy.max_ap_assoc_sta))
1979 goto nla_put_failure;
1980
1981 state->split_start++;
1982 break;
1983 case 11:
1984 if (rdev->wiphy.n_vendor_commands) {
1985 const struct nl80211_vendor_cmd_info *info;
1986 struct nlattr *nested;
1987
1988 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1989 if (!nested)
1990 goto nla_put_failure;
1991
1992 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1993 info = &rdev->wiphy.vendor_commands[i].info;
1994 if (nla_put(msg, i + 1, sizeof(*info), info))
1995 goto nla_put_failure;
1996 }
1997 nla_nest_end(msg, nested);
1998 }
1999
2000 if (rdev->wiphy.n_vendor_events) {
2001 const struct nl80211_vendor_cmd_info *info;
2002 struct nlattr *nested;
2003
2004 nested = nla_nest_start(msg,
2005 NL80211_ATTR_VENDOR_EVENTS);
2006 if (!nested)
2007 goto nla_put_failure;
2008
2009 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2010 info = &rdev->wiphy.vendor_events[i];
2011 if (nla_put(msg, i + 1, sizeof(*info), info))
2012 goto nla_put_failure;
2013 }
2014 nla_nest_end(msg, nested);
2015 }
2016 state->split_start++;
2017 break;
2018 case 12:
2019 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2020 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2021 rdev->wiphy.max_num_csa_counters))
2022 goto nla_put_failure;
2023
2024 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2025 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2026 goto nla_put_failure;
2027
2028 if (rdev->wiphy.max_sched_scan_reqs &&
2029 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2030 rdev->wiphy.max_sched_scan_reqs))
2031 goto nla_put_failure;
2032
2033 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2034 sizeof(rdev->wiphy.ext_features),
2035 rdev->wiphy.ext_features))
2036 goto nla_put_failure;
2037
2038 if (rdev->wiphy.bss_select_support) {
2039 struct nlattr *nested;
2040 u32 bss_select_support = rdev->wiphy.bss_select_support;
2041
2042 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
2043 if (!nested)
2044 goto nla_put_failure;
2045
2046 i = 0;
2047 while (bss_select_support) {
2048 if ((bss_select_support & 1) &&
2049 nla_put_flag(msg, i))
2050 goto nla_put_failure;
2051 i++;
2052 bss_select_support >>= 1;
2053 }
2054 nla_nest_end(msg, nested);
2055 }
2056
2057 state->split_start++;
2058 break;
2059 case 13:
2060 if (rdev->wiphy.num_iftype_ext_capab &&
2061 rdev->wiphy.iftype_ext_capab) {
2062 struct nlattr *nested_ext_capab, *nested;
2063
2064 nested = nla_nest_start(msg,
2065 NL80211_ATTR_IFTYPE_EXT_CAPA);
2066 if (!nested)
2067 goto nla_put_failure;
2068
2069 for (i = state->capa_start;
2070 i < rdev->wiphy.num_iftype_ext_capab; i++) {
2071 const struct wiphy_iftype_ext_capab *capab;
2072
2073 capab = &rdev->wiphy.iftype_ext_capab[i];
2074
2075 nested_ext_capab = nla_nest_start(msg, i);
2076 if (!nested_ext_capab ||
2077 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2078 capab->iftype) ||
2079 nla_put(msg, NL80211_ATTR_EXT_CAPA,
2080 capab->extended_capabilities_len,
2081 capab->extended_capabilities) ||
2082 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2083 capab->extended_capabilities_len,
2084 capab->extended_capabilities_mask))
2085 goto nla_put_failure;
2086
2087 nla_nest_end(msg, nested_ext_capab);
2088 if (state->split)
2089 break;
2090 }
2091 nla_nest_end(msg, nested);
2092 if (i < rdev->wiphy.num_iftype_ext_capab) {
2093 state->capa_start = i + 1;
2094 break;
2095 }
2096 }
2097
2098 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2099 rdev->wiphy.nan_supported_bands))
2100 goto nla_put_failure;
2101
2102 if (wiphy_ext_feature_isset(&rdev->wiphy,
2103 NL80211_EXT_FEATURE_TXQS)) {
2104 struct cfg80211_txq_stats txqstats = {};
2105 int res;
2106
2107 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2108 if (!res &&
2109 !nl80211_put_txq_stats(msg, &txqstats,
2110 NL80211_ATTR_TXQ_STATS))
2111 goto nla_put_failure;
2112
2113 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2114 rdev->wiphy.txq_limit))
2115 goto nla_put_failure;
2116 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2117 rdev->wiphy.txq_memory_limit))
2118 goto nla_put_failure;
2119 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2120 rdev->wiphy.txq_quantum))
2121 goto nla_put_failure;
2122 }
2123
2124 /* done */
2125 state->split_start = 0;
2126 break;
2127 }
2128 finish:
2129 genlmsg_end(msg, hdr);
2130 return 0;
2131
2132 nla_put_failure:
2133 genlmsg_cancel(msg, hdr);
2134 return -EMSGSIZE;
2135}
2136
2137static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2138 struct netlink_callback *cb,
2139 struct nl80211_dump_wiphy_state *state)
2140{
2141 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
2142 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
2143 nl80211_fam.maxattr, nl80211_policy, NULL);
2144 /* ignore parse errors for backward compatibility */
2145 if (ret)
2146 return 0;
2147
2148 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2149 if (tb[NL80211_ATTR_WIPHY])
2150 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2151 if (tb[NL80211_ATTR_WDEV])
2152 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2153 if (tb[NL80211_ATTR_IFINDEX]) {
2154 struct net_device *netdev;
2155 struct cfg80211_registered_device *rdev;
2156 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2157
2158 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2159 if (!netdev)
2160 return -ENODEV;
2161 if (netdev->ieee80211_ptr) {
2162 rdev = wiphy_to_rdev(
2163 netdev->ieee80211_ptr->wiphy);
2164 state->filter_wiphy = rdev->wiphy_idx;
2165 }
2166 }
2167
2168 return 0;
2169}
2170
2171static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2172{
2173 int idx = 0, ret;
2174 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2175 struct cfg80211_registered_device *rdev;
2176
2177 rtnl_lock();
2178 if (!state) {
2179 state = kzalloc(sizeof(*state), GFP_KERNEL);
2180 if (!state) {
2181 rtnl_unlock();
2182 return -ENOMEM;
2183 }
2184 state->filter_wiphy = -1;
2185 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2186 if (ret) {
2187 kfree(state);
2188 rtnl_unlock();
2189 return ret;
2190 }
2191 cb->args[0] = (long)state;
2192 }
2193
2194 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2195 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2196 continue;
2197 if (++idx <= state->start)
2198 continue;
2199 if (state->filter_wiphy != -1 &&
2200 state->filter_wiphy != rdev->wiphy_idx)
2201 continue;
2202 /* attempt to fit multiple wiphy data chunks into the skb */
2203 do {
2204 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2205 skb,
2206 NETLINK_CB(cb->skb).portid,
2207 cb->nlh->nlmsg_seq,
2208 NLM_F_MULTI, state);
2209 if (ret < 0) {
2210 /*
2211 * If sending the wiphy data didn't fit (ENOBUFS
2212 * or EMSGSIZE returned), this SKB is still
2213 * empty (so it's not too big because another
2214 * wiphy dataset is already in the skb) and
2215 * we've not tried to adjust the dump allocation
2216 * yet ... then adjust the alloc size to be
2217 * bigger, and return 1 but with the empty skb.
2218 * This results in an empty message being RX'ed
2219 * in userspace, but that is ignored.
2220 *
2221 * We can then retry with the larger buffer.
2222 */
2223 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2224 !skb->len && !state->split &&
2225 cb->min_dump_alloc < 4096) {
2226 cb->min_dump_alloc = 4096;
2227 state->split_start = 0;
2228 rtnl_unlock();
2229 return 1;
2230 }
2231 idx--;
2232 break;
2233 }
2234 } while (state->split_start > 0);
2235 break;
2236 }
2237 rtnl_unlock();
2238
2239 state->start = idx;
2240
2241 return skb->len;
2242}
2243
2244static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2245{
2246 kfree((void *)cb->args[0]);
2247 return 0;
2248}
2249
2250static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2251{
2252 struct sk_buff *msg;
2253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2254 struct nl80211_dump_wiphy_state state = {};
2255
2256 msg = nlmsg_new(4096, GFP_KERNEL);
2257 if (!msg)
2258 return -ENOMEM;
2259
2260 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2261 info->snd_portid, info->snd_seq, 0,
2262 &state) < 0) {
2263 nlmsg_free(msg);
2264 return -ENOBUFS;
2265 }
2266
2267 return genlmsg_reply(msg, info);
2268}
2269
2270static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2271 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2272 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2273 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2274 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2275 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2276};
2277
2278static int parse_txq_params(struct nlattr *tb[],
2279 struct ieee80211_txq_params *txq_params)
2280{
2281 u8 ac;
2282
2283 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2284 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2285 !tb[NL80211_TXQ_ATTR_AIFS])
2286 return -EINVAL;
2287
2288 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2289 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2290 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2291 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2292 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2293
2294 if (ac >= NL80211_NUM_ACS)
2295 return -EINVAL;
2296 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2297 return 0;
2298}
2299
2300static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2301{
2302 /*
2303 * You can only set the channel explicitly for WDS interfaces,
2304 * all others have their channel managed via their respective
2305 * "establish a connection" command (connect, join, ...)
2306 *
2307 * For AP/GO and mesh mode, the channel can be set with the
2308 * channel userspace API, but is only stored and passed to the
2309 * low-level driver when the AP starts or the mesh is joined.
2310 * This is for backward compatibility, userspace can also give
2311 * the channel in the start-ap or join-mesh commands instead.
2312 *
2313 * Monitors are special as they are normally slaved to
2314 * whatever else is going on, so they have their own special
2315 * operation to set the monitor channel if possible.
2316 */
2317 return !wdev ||
2318 wdev->iftype == NL80211_IFTYPE_AP ||
2319 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2320 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2321 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2322}
2323
2324static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2325 struct genl_info *info,
2326 struct cfg80211_chan_def *chandef)
2327{
2328 u32 control_freq;
2329
2330 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2331 return -EINVAL;
2332
2333 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2334
2335 memset(chandef, 0, sizeof(*chandef));
2336
2337 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2338 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2339 chandef->center_freq1 = control_freq;
2340 chandef->center_freq2 = 0;
2341
2342 /* Primary channel not allowed */
2343 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2344 return -EINVAL;
2345
2346 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2347 enum nl80211_channel_type chantype;
2348
2349 chantype = nla_get_u32(
2350 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2351
2352 switch (chantype) {
2353 case NL80211_CHAN_NO_HT:
2354 case NL80211_CHAN_HT20:
2355 case NL80211_CHAN_HT40PLUS:
2356 case NL80211_CHAN_HT40MINUS:
2357 cfg80211_chandef_create(chandef, chandef->chan,
2358 chantype);
2359 /* user input for center_freq is incorrect */
2360 if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2361 chandef->center_freq1 != nla_get_u32(
2362 info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2363 return -EINVAL;
2364 /* center_freq2 must be zero */
2365 if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2366 nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2367 return -EINVAL;
2368 break;
2369 default:
2370 return -EINVAL;
2371 }
2372 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2373 chandef->width =
2374 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2375 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2376 chandef->center_freq1 =
2377 nla_get_u32(
2378 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2379 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2380 chandef->center_freq2 =
2381 nla_get_u32(
2382 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2383 }
2384
2385 if (!cfg80211_chandef_valid(chandef))
2386 return -EINVAL;
2387
2388 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2389 IEEE80211_CHAN_DISABLED))
2390 return -EINVAL;
2391
2392 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2393 chandef->width == NL80211_CHAN_WIDTH_10) &&
2394 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2395 return -EINVAL;
2396
2397 return 0;
2398}
2399
2400static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2401 struct net_device *dev,
2402 struct genl_info *info)
2403{
2404 struct cfg80211_chan_def chandef;
2405 int result;
2406 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2407 struct wireless_dev *wdev = NULL;
2408
2409 if (dev)
2410 wdev = dev->ieee80211_ptr;
2411 if (!nl80211_can_set_dev_channel(wdev))
2412 return -EOPNOTSUPP;
2413 if (wdev)
2414 iftype = wdev->iftype;
2415
2416 result = nl80211_parse_chandef(rdev, info, &chandef);
2417 if (result)
2418 return result;
2419
2420 switch (iftype) {
2421 case NL80211_IFTYPE_AP:
2422 case NL80211_IFTYPE_P2P_GO:
2423 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2424 iftype)) {
2425 result = -EINVAL;
2426 break;
2427 }
2428 if (wdev->beacon_interval) {
2429 if (!dev || !rdev->ops->set_ap_chanwidth ||
2430 !(rdev->wiphy.features &
2431 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2432 result = -EBUSY;
2433 break;
2434 }
2435
2436 /* Only allow dynamic channel width changes */
2437 if (chandef.chan != wdev->preset_chandef.chan) {
2438 result = -EBUSY;
2439 break;
2440 }
2441 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2442 if (result)
2443 break;
2444 }
2445 wdev->preset_chandef = chandef;
2446 result = 0;
2447 break;
2448 case NL80211_IFTYPE_MESH_POINT:
2449 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2450 break;
2451 case NL80211_IFTYPE_MONITOR:
2452 result = cfg80211_set_monitor_channel(rdev, &chandef);
2453 break;
2454 default:
2455 result = -EINVAL;
2456 }
2457
2458 return result;
2459}
2460
2461static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2462{
2463 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2464 struct net_device *netdev = info->user_ptr[1];
2465
2466 return __nl80211_set_channel(rdev, netdev, info);
2467}
2468
2469static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2470{
2471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2472 struct net_device *dev = info->user_ptr[1];
2473 struct wireless_dev *wdev = dev->ieee80211_ptr;
2474 const u8 *bssid;
2475
2476 if (!info->attrs[NL80211_ATTR_MAC])
2477 return -EINVAL;
2478
2479 if (netif_running(dev))
2480 return -EBUSY;
2481
2482 if (!rdev->ops->set_wds_peer)
2483 return -EOPNOTSUPP;
2484
2485 if (wdev->iftype != NL80211_IFTYPE_WDS)
2486 return -EOPNOTSUPP;
2487
2488 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2489 return rdev_set_wds_peer(rdev, dev, bssid);
2490}
2491
2492static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2493{
2494 struct cfg80211_registered_device *rdev;
2495 struct net_device *netdev = NULL;
2496 struct wireless_dev *wdev;
2497 int result = 0, rem_txq_params = 0;
2498 struct nlattr *nl_txq_params;
2499 u32 changed;
2500 u8 retry_short = 0, retry_long = 0;
2501 u32 frag_threshold = 0, rts_threshold = 0;
2502 u8 coverage_class = 0;
2503 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2504
2505 ASSERT_RTNL();
2506
2507 /*
2508 * Try to find the wiphy and netdev. Normally this
2509 * function shouldn't need the netdev, but this is
2510 * done for backward compatibility -- previously
2511 * setting the channel was done per wiphy, but now
2512 * it is per netdev. Previous userland like hostapd
2513 * also passed a netdev to set_wiphy, so that it is
2514 * possible to let that go to the right netdev!
2515 */
2516
2517 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2518 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2519
2520 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2521 if (netdev && netdev->ieee80211_ptr)
2522 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2523 else
2524 netdev = NULL;
2525 }
2526
2527 if (!netdev) {
2528 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2529 info->attrs);
2530 if (IS_ERR(rdev))
2531 return PTR_ERR(rdev);
2532 wdev = NULL;
2533 netdev = NULL;
2534 result = 0;
2535 } else
2536 wdev = netdev->ieee80211_ptr;
2537
2538 /*
2539 * end workaround code, by now the rdev is available
2540 * and locked, and wdev may or may not be NULL.
2541 */
2542
2543 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2544 result = cfg80211_dev_rename(
2545 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2546
2547 if (result)
2548 return result;
2549
2550 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2551 struct ieee80211_txq_params txq_params;
2552 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2553
2554 if (!rdev->ops->set_txq_params)
2555 return -EOPNOTSUPP;
2556
2557 if (!netdev)
2558 return -EINVAL;
2559
2560 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2561 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2562 return -EINVAL;
2563
2564 if (!netif_running(netdev))
2565 return -ENETDOWN;
2566
2567 nla_for_each_nested(nl_txq_params,
2568 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2569 rem_txq_params) {
2570 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2571 nl_txq_params,
2572 txq_params_policy,
2573 info->extack);
2574 if (result)
2575 return result;
2576 result = parse_txq_params(tb, &txq_params);
2577 if (result)
2578 return result;
2579
2580 result = rdev_set_txq_params(rdev, netdev,
2581 &txq_params);
2582 if (result)
2583 return result;
2584 }
2585 }
2586
2587 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2588 result = __nl80211_set_channel(
2589 rdev,
2590 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2591 info);
2592 if (result)
2593 return result;
2594 }
2595
2596 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2597 struct wireless_dev *txp_wdev = wdev;
2598 enum nl80211_tx_power_setting type;
2599 int idx, mbm = 0;
2600
2601 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2602 txp_wdev = NULL;
2603
2604 if (!rdev->ops->set_tx_power)
2605 return -EOPNOTSUPP;
2606
2607 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2608 type = nla_get_u32(info->attrs[idx]);
2609
2610 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2611 (type != NL80211_TX_POWER_AUTOMATIC))
2612 return -EINVAL;
2613
2614 if (type != NL80211_TX_POWER_AUTOMATIC) {
2615 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2616 mbm = nla_get_u32(info->attrs[idx]);
2617 }
2618
2619 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2620 if (result)
2621 return result;
2622 }
2623
2624 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2625 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2626 u32 tx_ant, rx_ant;
2627
2628 if ((!rdev->wiphy.available_antennas_tx &&
2629 !rdev->wiphy.available_antennas_rx) ||
2630 !rdev->ops->set_antenna)
2631 return -EOPNOTSUPP;
2632
2633 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2634 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2635
2636 /* reject antenna configurations which don't match the
2637 * available antenna masks, except for the "all" mask */
2638 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2639 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2640 return -EINVAL;
2641
2642 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2643 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2644
2645 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2646 if (result)
2647 return result;
2648 }
2649
2650 changed = 0;
2651
2652 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2653 retry_short = nla_get_u8(
2654 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2655 if (retry_short == 0)
2656 return -EINVAL;
2657
2658 changed |= WIPHY_PARAM_RETRY_SHORT;
2659 }
2660
2661 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2662 retry_long = nla_get_u8(
2663 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2664 if (retry_long == 0)
2665 return -EINVAL;
2666
2667 changed |= WIPHY_PARAM_RETRY_LONG;
2668 }
2669
2670 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2671 frag_threshold = nla_get_u32(
2672 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2673 if (frag_threshold < 256)
2674 return -EINVAL;
2675
2676 if (frag_threshold != (u32) -1) {
2677 /*
2678 * Fragments (apart from the last one) are required to
2679 * have even length. Make the fragmentation code
2680 * simpler by stripping LSB should someone try to use
2681 * odd threshold value.
2682 */
2683 frag_threshold &= ~0x1;
2684 }
2685 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2686 }
2687
2688 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2689 rts_threshold = nla_get_u32(
2690 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2691 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2692 }
2693
2694 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2695 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2696 return -EINVAL;
2697
2698 coverage_class = nla_get_u8(
2699 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2700 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2701 }
2702
2703 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2704 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2705 return -EOPNOTSUPP;
2706
2707 changed |= WIPHY_PARAM_DYN_ACK;
2708 }
2709
2710 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
2711 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2712 NL80211_EXT_FEATURE_TXQS))
2713 return -EOPNOTSUPP;
2714 txq_limit = nla_get_u32(
2715 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
2716 changed |= WIPHY_PARAM_TXQ_LIMIT;
2717 }
2718
2719 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
2720 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2721 NL80211_EXT_FEATURE_TXQS))
2722 return -EOPNOTSUPP;
2723 txq_memory_limit = nla_get_u32(
2724 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
2725 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
2726 }
2727
2728 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
2729 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2730 NL80211_EXT_FEATURE_TXQS))
2731 return -EOPNOTSUPP;
2732 txq_quantum = nla_get_u32(
2733 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
2734 changed |= WIPHY_PARAM_TXQ_QUANTUM;
2735 }
2736
2737 if (changed) {
2738 u8 old_retry_short, old_retry_long;
2739 u32 old_frag_threshold, old_rts_threshold;
2740 u8 old_coverage_class;
2741 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
2742
2743 if (!rdev->ops->set_wiphy_params)
2744 return -EOPNOTSUPP;
2745
2746 old_retry_short = rdev->wiphy.retry_short;
2747 old_retry_long = rdev->wiphy.retry_long;
2748 old_frag_threshold = rdev->wiphy.frag_threshold;
2749 old_rts_threshold = rdev->wiphy.rts_threshold;
2750 old_coverage_class = rdev->wiphy.coverage_class;
2751 old_txq_limit = rdev->wiphy.txq_limit;
2752 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
2753 old_txq_quantum = rdev->wiphy.txq_quantum;
2754
2755 if (changed & WIPHY_PARAM_RETRY_SHORT)
2756 rdev->wiphy.retry_short = retry_short;
2757 if (changed & WIPHY_PARAM_RETRY_LONG)
2758 rdev->wiphy.retry_long = retry_long;
2759 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2760 rdev->wiphy.frag_threshold = frag_threshold;
2761 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2762 rdev->wiphy.rts_threshold = rts_threshold;
2763 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2764 rdev->wiphy.coverage_class = coverage_class;
2765 if (changed & WIPHY_PARAM_TXQ_LIMIT)
2766 rdev->wiphy.txq_limit = txq_limit;
2767 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
2768 rdev->wiphy.txq_memory_limit = txq_memory_limit;
2769 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
2770 rdev->wiphy.txq_quantum = txq_quantum;
2771
2772 result = rdev_set_wiphy_params(rdev, changed);
2773 if (result) {
2774 rdev->wiphy.retry_short = old_retry_short;
2775 rdev->wiphy.retry_long = old_retry_long;
2776 rdev->wiphy.frag_threshold = old_frag_threshold;
2777 rdev->wiphy.rts_threshold = old_rts_threshold;
2778 rdev->wiphy.coverage_class = old_coverage_class;
2779 rdev->wiphy.txq_limit = old_txq_limit;
2780 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
2781 rdev->wiphy.txq_quantum = old_txq_quantum;
2782 return result;
2783 }
2784 }
2785 return 0;
2786}
2787
2788static inline u64 wdev_id(struct wireless_dev *wdev)
2789{
2790 return (u64)wdev->identifier |
2791 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2792}
2793
2794static int nl80211_send_chandef(struct sk_buff *msg,
2795 const struct cfg80211_chan_def *chandef)
2796{
2797 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2798 return -EINVAL;
2799
2800 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2801 chandef->chan->center_freq))
2802 return -ENOBUFS;
2803 switch (chandef->width) {
2804 case NL80211_CHAN_WIDTH_20_NOHT:
2805 case NL80211_CHAN_WIDTH_20:
2806 case NL80211_CHAN_WIDTH_40:
2807 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2808 cfg80211_get_chandef_type(chandef)))
2809 return -ENOBUFS;
2810 break;
2811 default:
2812 break;
2813 }
2814 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2815 return -ENOBUFS;
2816 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2817 return -ENOBUFS;
2818 if (chandef->center_freq2 &&
2819 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2820 return -ENOBUFS;
2821 return 0;
2822}
2823
2824static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2825 struct cfg80211_registered_device *rdev,
2826 struct wireless_dev *wdev, bool removal)
2827{
2828 struct net_device *dev = wdev->netdev;
2829 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2830 void *hdr;
2831
2832 if (removal)
2833 cmd = NL80211_CMD_DEL_INTERFACE;
2834
2835 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2836 if (!hdr)
2837 return -1;
2838
2839 if (dev &&
2840 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2841 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2842 goto nla_put_failure;
2843
2844 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2845 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2846 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2847 NL80211_ATTR_PAD) ||
2848 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2849 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2850 rdev->devlist_generation ^
2851 (cfg80211_rdev_list_generation << 2)) ||
2852 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
2853 goto nla_put_failure;
2854
2855 if (rdev->ops->get_channel) {
2856 int ret;
2857 struct cfg80211_chan_def chandef = {};
2858
2859 ret = rdev_get_channel(rdev, wdev, &chandef);
2860 if (ret == 0) {
2861 if (nl80211_send_chandef(msg, &chandef))
2862 goto nla_put_failure;
2863 }
2864 }
2865
2866 if (rdev->ops->get_tx_power) {
2867 int dbm, ret;
2868
2869 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2870 if (ret == 0 &&
2871 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2872 DBM_TO_MBM(dbm)))
2873 goto nla_put_failure;
2874 }
2875
2876 wdev_lock(wdev);
2877 switch (wdev->iftype) {
2878 case NL80211_IFTYPE_AP:
2879 if (wdev->ssid_len &&
2880 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2881 goto nla_put_failure_locked;
2882 break;
2883 case NL80211_IFTYPE_STATION:
2884 case NL80211_IFTYPE_P2P_CLIENT:
2885 case NL80211_IFTYPE_ADHOC: {
2886 const u8 *ssid_ie;
2887 if (!wdev->current_bss)
2888 break;
2889 rcu_read_lock();
2890 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2891 WLAN_EID_SSID);
2892 if (ssid_ie &&
2893 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2894 goto nla_put_failure_rcu_locked;
2895 rcu_read_unlock();
2896 break;
2897 }
2898 default:
2899 /* nothing */
2900 break;
2901 }
2902 wdev_unlock(wdev);
2903
2904 if (rdev->ops->get_txq_stats) {
2905 struct cfg80211_txq_stats txqstats = {};
2906 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
2907
2908 if (ret == 0 &&
2909 !nl80211_put_txq_stats(msg, &txqstats,
2910 NL80211_ATTR_TXQ_STATS))
2911 goto nla_put_failure;
2912 }
2913
2914 genlmsg_end(msg, hdr);
2915 return 0;
2916
2917 nla_put_failure_rcu_locked:
2918 rcu_read_unlock();
2919 nla_put_failure_locked:
2920 wdev_unlock(wdev);
2921 nla_put_failure:
2922 genlmsg_cancel(msg, hdr);
2923 return -EMSGSIZE;
2924}
2925
2926static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2927{
2928 int wp_idx = 0;
2929 int if_idx = 0;
2930 int wp_start = cb->args[0];
2931 int if_start = cb->args[1];
2932 int filter_wiphy = -1;
2933 struct cfg80211_registered_device *rdev;
2934 struct wireless_dev *wdev;
2935 int ret;
2936
2937 rtnl_lock();
2938 if (!cb->args[2]) {
2939 struct nl80211_dump_wiphy_state state = {
2940 .filter_wiphy = -1,
2941 };
2942
2943 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2944 if (ret)
2945 goto out_unlock;
2946
2947 filter_wiphy = state.filter_wiphy;
2948
2949 /*
2950 * if filtering, set cb->args[2] to +1 since 0 is the default
2951 * value needed to determine that parsing is necessary.
2952 */
2953 if (filter_wiphy >= 0)
2954 cb->args[2] = filter_wiphy + 1;
2955 else
2956 cb->args[2] = -1;
2957 } else if (cb->args[2] > 0) {
2958 filter_wiphy = cb->args[2] - 1;
2959 }
2960
2961 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2962 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2963 continue;
2964 if (wp_idx < wp_start) {
2965 wp_idx++;
2966 continue;
2967 }
2968
2969 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2970 continue;
2971
2972 if_idx = 0;
2973
2974 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2975 if (if_idx < if_start) {
2976 if_idx++;
2977 continue;
2978 }
2979 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2980 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2981 rdev, wdev, false) < 0) {
2982 goto out;
2983 }
2984 if_idx++;
2985 }
2986
2987 wp_idx++;
2988 }
2989 out:
2990 cb->args[0] = wp_idx;
2991 cb->args[1] = if_idx;
2992
2993 ret = skb->len;
2994 out_unlock:
2995 rtnl_unlock();
2996
2997 return ret;
2998}
2999
3000static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3001{
3002 struct sk_buff *msg;
3003 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3004 struct wireless_dev *wdev = info->user_ptr[1];
3005
3006 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3007 if (!msg)
3008 return -ENOMEM;
3009
3010 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3011 rdev, wdev, false) < 0) {
3012 nlmsg_free(msg);
3013 return -ENOBUFS;
3014 }
3015
3016 return genlmsg_reply(msg, info);
3017}
3018
3019static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3020 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3021 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3022 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3023 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3024 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3025 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3026};
3027
3028static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3029{
3030 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3031 int flag;
3032
3033 *mntrflags = 0;
3034
3035 if (!nla)
3036 return -EINVAL;
3037
3038 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
3039 mntr_flags_policy, NULL))
3040 return -EINVAL;
3041
3042 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3043 if (flags[flag])
3044 *mntrflags |= (1<<flag);
3045
3046 *mntrflags |= MONITOR_FLAG_CHANGED;
3047
3048 return 0;
3049}
3050
3051static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3052 enum nl80211_iftype type,
3053 struct genl_info *info,
3054 struct vif_params *params)
3055{
3056 bool change = false;
3057 int err;
3058
3059 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3060 if (type != NL80211_IFTYPE_MONITOR)
3061 return -EINVAL;
3062
3063 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3064 &params->flags);
3065 if (err)
3066 return err;
3067
3068 change = true;
3069 }
3070
3071 if (params->flags & MONITOR_FLAG_ACTIVE &&
3072 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3073 return -EOPNOTSUPP;
3074
3075 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3076 const u8 *mumimo_groups;
3077 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3078
3079 if (type != NL80211_IFTYPE_MONITOR)
3080 return -EINVAL;
3081
3082 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3083 return -EOPNOTSUPP;
3084
3085 mumimo_groups =
3086 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3087
3088 /* bits 0 and 63 are reserved and must be zero */
3089 if ((mumimo_groups[0] & BIT(0)) ||
3090 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3091 return -EINVAL;
3092
3093 params->vht_mumimo_groups = mumimo_groups;
3094 change = true;
3095 }
3096
3097 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3098 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3099
3100 if (type != NL80211_IFTYPE_MONITOR)
3101 return -EINVAL;
3102
3103 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3104 return -EOPNOTSUPP;
3105
3106 params->vht_mumimo_follow_addr =
3107 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3108 change = true;
3109 }
3110
3111 return change ? 1 : 0;
3112}
3113
3114static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3115 struct net_device *netdev, u8 use_4addr,
3116 enum nl80211_iftype iftype)
3117{
3118 if (!use_4addr) {
3119 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3120 return -EBUSY;
3121 return 0;
3122 }
3123
3124 switch (iftype) {
3125 case NL80211_IFTYPE_AP_VLAN:
3126 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3127 return 0;
3128 break;
3129 case NL80211_IFTYPE_STATION:
3130 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3131 return 0;
3132 break;
3133 default:
3134 break;
3135 }
3136
3137 return -EOPNOTSUPP;
3138}
3139
3140static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3141{
3142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3143 struct vif_params params;
3144 int err;
3145 enum nl80211_iftype otype, ntype;
3146 struct net_device *dev = info->user_ptr[1];
3147 bool change = false;
3148
3149 memset(&params, 0, sizeof(params));
3150
3151 otype = ntype = dev->ieee80211_ptr->iftype;
3152
3153 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3154 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3155 if (otype != ntype)
3156 change = true;
3157 if (ntype > NL80211_IFTYPE_MAX)
3158 return -EINVAL;
3159 }
3160
3161 if (info->attrs[NL80211_ATTR_MESH_ID]) {
3162 struct wireless_dev *wdev = dev->ieee80211_ptr;
3163
3164 if (ntype != NL80211_IFTYPE_MESH_POINT)
3165 return -EINVAL;
3166 if (netif_running(dev))
3167 return -EBUSY;
3168
3169 wdev_lock(wdev);
3170 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3171 IEEE80211_MAX_MESH_ID_LEN);
3172 wdev->mesh_id_up_len =
3173 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3174 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3175 wdev->mesh_id_up_len);
3176 wdev_unlock(wdev);
3177 }
3178
3179 if (info->attrs[NL80211_ATTR_4ADDR]) {
3180 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3181 change = true;
3182 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3183 if (err)
3184 return err;
3185 } else {
3186 params.use_4addr = -1;
3187 }
3188
3189 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3190 if (err < 0)
3191 return err;
3192 if (err > 0)
3193 change = true;
3194
3195 if (change)
3196 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3197 else
3198 err = 0;
3199
3200 if (!err && params.use_4addr != -1)
3201 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3202
3203 return err;
3204}
3205
3206static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3207{
3208 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3209 struct vif_params params;
3210 struct wireless_dev *wdev;
3211 struct sk_buff *msg;
3212 int err;
3213 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3214
3215 /* to avoid failing a new interface creation due to pending removal */
3216 cfg80211_destroy_ifaces(rdev);
3217
3218 memset(&params, 0, sizeof(params));
3219
3220 if (!info->attrs[NL80211_ATTR_IFNAME])
3221 return -EINVAL;
3222
3223 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3224 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3225 if (type > NL80211_IFTYPE_MAX)
3226 return -EINVAL;
3227 }
3228
3229 if (!rdev->ops->add_virtual_intf)
3230 return -EOPNOTSUPP;
3231
3232 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3233 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3234 info->attrs[NL80211_ATTR_MAC]) {
3235 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3236 ETH_ALEN);
3237 if (!is_valid_ether_addr(params.macaddr))
3238 return -EADDRNOTAVAIL;
3239 }
3240
3241 if (info->attrs[NL80211_ATTR_4ADDR]) {
3242 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3243 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3244 if (err)
3245 return err;
3246 }
3247
3248 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3249 return -EOPNOTSUPP;
3250
3251 err = nl80211_parse_mon_options(rdev, type, info, &params);
3252 if (err < 0)
3253 return err;
3254
3255 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3256 if (!msg)
3257 return -ENOMEM;
3258
3259 wdev = rdev_add_virtual_intf(rdev,
3260 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3261 NET_NAME_USER, type, &params);
3262 if (WARN_ON(!wdev)) {
3263 nlmsg_free(msg);
3264 return -EPROTO;
3265 } else if (IS_ERR(wdev)) {
3266 nlmsg_free(msg);
3267 return PTR_ERR(wdev);
3268 }
3269
3270 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3271 wdev->owner_nlportid = info->snd_portid;
3272
3273 switch (type) {
3274 case NL80211_IFTYPE_MESH_POINT:
3275 if (!info->attrs[NL80211_ATTR_MESH_ID])
3276 break;
3277 wdev_lock(wdev);
3278 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3279 IEEE80211_MAX_MESH_ID_LEN);
3280 wdev->mesh_id_up_len =
3281 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3282 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3283 wdev->mesh_id_up_len);
3284 wdev_unlock(wdev);
3285 break;
3286 case NL80211_IFTYPE_NAN:
3287 case NL80211_IFTYPE_P2P_DEVICE:
3288 /*
3289 * P2P Device and NAN do not have a netdev, so don't go
3290 * through the netdev notifier and must be added here
3291 */
3292 mutex_init(&wdev->mtx);
3293 INIT_LIST_HEAD(&wdev->event_list);
3294 spin_lock_init(&wdev->event_lock);
3295 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3296 spin_lock_init(&wdev->mgmt_registrations_lock);
3297
3298 wdev->identifier = ++rdev->wdev_id;
3299 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3300 rdev->devlist_generation++;
3301 break;
3302 default:
3303 break;
3304 }
3305
3306 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3307 rdev, wdev, false) < 0) {
3308 nlmsg_free(msg);
3309 return -ENOBUFS;
3310 }
3311
3312 /*
3313 * For wdevs which have no associated netdev object (e.g. of type
3314 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3315 * For all other types, the event will be generated from the
3316 * netdev notifier
3317 */
3318 if (!wdev->netdev)
3319 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3320
3321 return genlmsg_reply(msg, info);
3322}
3323
3324static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3325{
3326 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3327 struct wireless_dev *wdev = info->user_ptr[1];
3328
3329 if (!rdev->ops->del_virtual_intf)
3330 return -EOPNOTSUPP;
3331
3332 /*
3333 * If we remove a wireless device without a netdev then clear
3334 * user_ptr[1] so that nl80211_post_doit won't dereference it
3335 * to check if it needs to do dev_put(). Otherwise it crashes
3336 * since the wdev has been freed, unlike with a netdev where
3337 * we need the dev_put() for the netdev to really be freed.
3338 */
3339 if (!wdev->netdev)
3340 info->user_ptr[1] = NULL;
3341
3342 return rdev_del_virtual_intf(rdev, wdev);
3343}
3344
3345static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3346{
3347 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3348 struct net_device *dev = info->user_ptr[1];
3349 u16 noack_map;
3350
3351 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3352 return -EINVAL;
3353
3354 if (!rdev->ops->set_noack_map)
3355 return -EOPNOTSUPP;
3356
3357 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3358
3359 return rdev_set_noack_map(rdev, dev, noack_map);
3360}
3361
3362struct get_key_cookie {
3363 struct sk_buff *msg;
3364 int error;
3365 int idx;
3366};
3367
3368static void get_key_callback(void *c, struct key_params *params)
3369{
3370 struct nlattr *key;
3371 struct get_key_cookie *cookie = c;
3372
3373 if ((params->key &&
3374 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3375 params->key_len, params->key)) ||
3376 (params->seq &&
3377 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3378 params->seq_len, params->seq)) ||
3379 (params->cipher &&
3380 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3381 params->cipher)))
3382 goto nla_put_failure;
3383
3384 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3385 if (!key)
3386 goto nla_put_failure;
3387
3388 if ((params->key &&
3389 nla_put(cookie->msg, NL80211_KEY_DATA,
3390 params->key_len, params->key)) ||
3391 (params->seq &&
3392 nla_put(cookie->msg, NL80211_KEY_SEQ,
3393 params->seq_len, params->seq)) ||
3394 (params->cipher &&
3395 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3396 params->cipher)))
3397 goto nla_put_failure;
3398
3399 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3400 goto nla_put_failure;
3401
3402 nla_nest_end(cookie->msg, key);
3403
3404 return;
3405 nla_put_failure:
3406 cookie->error = 1;
3407}
3408
3409static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3410{
3411 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3412 int err;
3413 struct net_device *dev = info->user_ptr[1];
3414 u8 key_idx = 0;
3415 const u8 *mac_addr = NULL;
3416 bool pairwise;
3417 struct get_key_cookie cookie = {
3418 .error = 0,
3419 };
3420 void *hdr;
3421 struct sk_buff *msg;
3422
3423 if (info->attrs[NL80211_ATTR_KEY_IDX])
3424 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3425
3426 if (key_idx > 5)
3427 return -EINVAL;
3428
3429 if (info->attrs[NL80211_ATTR_MAC])
3430 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3431
3432 pairwise = !!mac_addr;
3433 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3434 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3435
3436 if (kt >= NUM_NL80211_KEYTYPES)
3437 return -EINVAL;
3438 if (kt != NL80211_KEYTYPE_GROUP &&
3439 kt != NL80211_KEYTYPE_PAIRWISE)
3440 return -EINVAL;
3441 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3442 }
3443
3444 if (!rdev->ops->get_key)
3445 return -EOPNOTSUPP;
3446
3447 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3448 return -ENOENT;
3449
3450 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3451 if (!msg)
3452 return -ENOMEM;
3453
3454 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3455 NL80211_CMD_NEW_KEY);
3456 if (!hdr)
3457 goto nla_put_failure;
3458
3459 cookie.msg = msg;
3460 cookie.idx = key_idx;
3461
3462 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3463 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3464 goto nla_put_failure;
3465 if (mac_addr &&
3466 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3467 goto nla_put_failure;
3468
3469 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3470 get_key_callback);
3471
3472 if (err)
3473 goto free_msg;
3474
3475 if (cookie.error)
3476 goto nla_put_failure;
3477
3478 genlmsg_end(msg, hdr);
3479 return genlmsg_reply(msg, info);
3480
3481 nla_put_failure:
3482 err = -ENOBUFS;
3483 free_msg:
3484 nlmsg_free(msg);
3485 return err;
3486}
3487
3488static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3489{
3490 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3491 struct key_parse key;
3492 int err;
3493 struct net_device *dev = info->user_ptr[1];
3494
3495 err = nl80211_parse_key(info, &key);
3496 if (err)
3497 return err;
3498
3499 if (key.idx < 0)
3500 return -EINVAL;
3501
3502 /* only support setting default key */
3503 if (!key.def && !key.defmgmt)
3504 return -EINVAL;
3505
3506 wdev_lock(dev->ieee80211_ptr);
3507
3508 if (key.def) {
3509 if (!rdev->ops->set_default_key) {
3510 err = -EOPNOTSUPP;
3511 goto out;
3512 }
3513
3514 err = nl80211_key_allowed(dev->ieee80211_ptr);
3515 if (err)
3516 goto out;
3517
3518 err = rdev_set_default_key(rdev, dev, key.idx,
3519 key.def_uni, key.def_multi);
3520
3521 if (err)
3522 goto out;
3523
3524#ifdef CONFIG_CFG80211_WEXT
3525 dev->ieee80211_ptr->wext.default_key = key.idx;
3526#endif
3527 } else {
3528 if (key.def_uni || !key.def_multi) {
3529 err = -EINVAL;
3530 goto out;
3531 }
3532
3533 if (!rdev->ops->set_default_mgmt_key) {
3534 err = -EOPNOTSUPP;
3535 goto out;
3536 }
3537
3538 err = nl80211_key_allowed(dev->ieee80211_ptr);
3539 if (err)
3540 goto out;
3541
3542 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3543 if (err)
3544 goto out;
3545
3546#ifdef CONFIG_CFG80211_WEXT
3547 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3548#endif
3549 }
3550
3551 out:
3552 wdev_unlock(dev->ieee80211_ptr);
3553
3554 return err;
3555}
3556
3557static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3558{
3559 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3560 int err;
3561 struct net_device *dev = info->user_ptr[1];
3562 struct key_parse key;
3563 const u8 *mac_addr = NULL;
3564
3565 err = nl80211_parse_key(info, &key);
3566 if (err)
3567 return err;
3568
3569 if (!key.p.key)
3570 return -EINVAL;
3571
3572 if (info->attrs[NL80211_ATTR_MAC])
3573 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3574
3575 if (key.type == -1) {
3576 if (mac_addr)
3577 key.type = NL80211_KEYTYPE_PAIRWISE;
3578 else
3579 key.type = NL80211_KEYTYPE_GROUP;
3580 }
3581
3582 /* for now */
3583 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3584 key.type != NL80211_KEYTYPE_GROUP)
3585 return -EINVAL;
3586
3587 if (!rdev->ops->add_key)
3588 return -EOPNOTSUPP;
3589
3590 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3591 key.type == NL80211_KEYTYPE_PAIRWISE,
3592 mac_addr))
3593 return -EINVAL;
3594
3595 wdev_lock(dev->ieee80211_ptr);
3596 err = nl80211_key_allowed(dev->ieee80211_ptr);
3597 if (!err)
3598 err = rdev_add_key(rdev, dev, key.idx,
3599 key.type == NL80211_KEYTYPE_PAIRWISE,
3600 mac_addr, &key.p);
3601 wdev_unlock(dev->ieee80211_ptr);
3602
3603 return err;
3604}
3605
3606static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3607{
3608 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3609 int err;
3610 struct net_device *dev = info->user_ptr[1];
3611 u8 *mac_addr = NULL;
3612 struct key_parse key;
3613
3614 err = nl80211_parse_key(info, &key);
3615 if (err)
3616 return err;
3617
3618 if (info->attrs[NL80211_ATTR_MAC])
3619 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3620
3621 if (key.type == -1) {
3622 if (mac_addr)
3623 key.type = NL80211_KEYTYPE_PAIRWISE;
3624 else
3625 key.type = NL80211_KEYTYPE_GROUP;
3626 }
3627
3628 /* for now */
3629 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3630 key.type != NL80211_KEYTYPE_GROUP)
3631 return -EINVAL;
3632
3633 if (!rdev->ops->del_key)
3634 return -EOPNOTSUPP;
3635
3636 wdev_lock(dev->ieee80211_ptr);
3637 err = nl80211_key_allowed(dev->ieee80211_ptr);
3638
3639 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3640 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3641 err = -ENOENT;
3642
3643 if (!err)
3644 err = rdev_del_key(rdev, dev, key.idx,
3645 key.type == NL80211_KEYTYPE_PAIRWISE,
3646 mac_addr);
3647
3648#ifdef CONFIG_CFG80211_WEXT
3649 if (!err) {
3650 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3651 dev->ieee80211_ptr->wext.default_key = -1;
3652 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3653 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3654 }
3655#endif
3656 wdev_unlock(dev->ieee80211_ptr);
3657
3658 return err;
3659}
3660
3661/* This function returns an error or the number of nested attributes */
3662static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3663{
3664 struct nlattr *attr;
3665 int n_entries = 0, tmp;
3666
3667 nla_for_each_nested(attr, nl_attr, tmp) {
3668 if (nla_len(attr) != ETH_ALEN)
3669 return -EINVAL;
3670
3671 n_entries++;
3672 }
3673
3674 return n_entries;
3675}
3676
3677/*
3678 * This function parses ACL information and allocates memory for ACL data.
3679 * On successful return, the calling function is responsible to free the
3680 * ACL buffer returned by this function.
3681 */
3682static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3683 struct genl_info *info)
3684{
3685 enum nl80211_acl_policy acl_policy;
3686 struct nlattr *attr;
3687 struct cfg80211_acl_data *acl;
3688 int i = 0, n_entries, tmp;
3689
3690 if (!wiphy->max_acl_mac_addrs)
3691 return ERR_PTR(-EOPNOTSUPP);
3692
3693 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3694 return ERR_PTR(-EINVAL);
3695
3696 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3697 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3698 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3699 return ERR_PTR(-EINVAL);
3700
3701 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3702 return ERR_PTR(-EINVAL);
3703
3704 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3705 if (n_entries < 0)
3706 return ERR_PTR(n_entries);
3707
3708 if (n_entries > wiphy->max_acl_mac_addrs)
3709 return ERR_PTR(-ENOTSUPP);
3710
3711 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3712 GFP_KERNEL);
3713 if (!acl)
3714 return ERR_PTR(-ENOMEM);
3715
3716 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3717 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3718 i++;
3719 }
3720
3721 acl->n_acl_entries = n_entries;
3722 acl->acl_policy = acl_policy;
3723
3724 return acl;
3725}
3726
3727static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3728{
3729 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3730 struct net_device *dev = info->user_ptr[1];
3731 struct cfg80211_acl_data *acl;
3732 int err;
3733
3734 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3735 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3736 return -EOPNOTSUPP;
3737
3738 if (!dev->ieee80211_ptr->beacon_interval)
3739 return -EINVAL;
3740
3741 acl = parse_acl_data(&rdev->wiphy, info);
3742 if (IS_ERR(acl))
3743 return PTR_ERR(acl);
3744
3745 err = rdev_set_mac_acl(rdev, dev, acl);
3746
3747 kfree(acl);
3748
3749 return err;
3750}
3751
3752static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3753 u8 *rates, u8 rates_len)
3754{
3755 u8 i;
3756 u32 mask = 0;
3757
3758 for (i = 0; i < rates_len; i++) {
3759 int rate = (rates[i] & 0x7f) * 5;
3760 int ridx;
3761
3762 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3763 struct ieee80211_rate *srate =
3764 &sband->bitrates[ridx];
3765 if (rate == srate->bitrate) {
3766 mask |= 1 << ridx;
3767 break;
3768 }
3769 }
3770 if (ridx == sband->n_bitrates)
3771 return 0; /* rate not found */
3772 }
3773
3774 return mask;
3775}
3776
3777static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3778 u8 *rates, u8 rates_len,
3779 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3780{
3781 u8 i;
3782
3783 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3784
3785 for (i = 0; i < rates_len; i++) {
3786 int ridx, rbit;
3787
3788 ridx = rates[i] / 8;
3789 rbit = BIT(rates[i] % 8);
3790
3791 /* check validity */
3792 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3793 return false;
3794
3795 /* check availability */
3796 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
3797 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3798 mcs[ridx] |= rbit;
3799 else
3800 return false;
3801 }
3802
3803 return true;
3804}
3805
3806static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3807{
3808 u16 mcs_mask = 0;
3809
3810 switch (vht_mcs_map) {
3811 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3812 break;
3813 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3814 mcs_mask = 0x00FF;
3815 break;
3816 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3817 mcs_mask = 0x01FF;
3818 break;
3819 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3820 mcs_mask = 0x03FF;
3821 break;
3822 default:
3823 break;
3824 }
3825
3826 return mcs_mask;
3827}
3828
3829static void vht_build_mcs_mask(u16 vht_mcs_map,
3830 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3831{
3832 u8 nss;
3833
3834 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3835 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3836 vht_mcs_map >>= 2;
3837 }
3838}
3839
3840static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3841 struct nl80211_txrate_vht *txrate,
3842 u16 mcs[NL80211_VHT_NSS_MAX])
3843{
3844 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3845 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3846 u8 i;
3847
3848 if (!sband->vht_cap.vht_supported)
3849 return false;
3850
3851 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3852
3853 /* Build vht_mcs_mask from VHT capabilities */
3854 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3855
3856 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3857 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3858 mcs[i] = txrate->mcs[i];
3859 else
3860 return false;
3861 }
3862
3863 return true;
3864}
3865
3866static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3867 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3868 .len = NL80211_MAX_SUPP_RATES },
3869 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3870 .len = NL80211_MAX_SUPP_HT_RATES },
3871 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3872 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3873};
3874
3875static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3876 struct cfg80211_bitrate_mask *mask)
3877{
3878 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3879 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3880 int rem, i;
3881 struct nlattr *tx_rates;
3882 struct ieee80211_supported_band *sband;
3883 u16 vht_tx_mcs_map;
3884
3885 memset(mask, 0, sizeof(*mask));
3886 /* Default to all rates enabled */
3887 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3888 sband = rdev->wiphy.bands[i];
3889
3890 if (!sband)
3891 continue;
3892
3893 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3894 memcpy(mask->control[i].ht_mcs,
3895 sband->ht_cap.mcs.rx_mask,
3896 sizeof(mask->control[i].ht_mcs));
3897
3898 if (!sband->vht_cap.vht_supported)
3899 continue;
3900
3901 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3902 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3903 }
3904
3905 /* if no rates are given set it back to the defaults */
3906 if (!info->attrs[NL80211_ATTR_TX_RATES])
3907 goto out;
3908
3909 /* The nested attribute uses enum nl80211_band as the index. This maps
3910 * directly to the enum nl80211_band values used in cfg80211.
3911 */
3912 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3913 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3914 enum nl80211_band band = nla_type(tx_rates);
3915 int err;
3916
3917 if (band < 0 || band >= NUM_NL80211_BANDS)
3918 return -EINVAL;
3919 sband = rdev->wiphy.bands[band];
3920 if (sband == NULL)
3921 return -EINVAL;
3922 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3923 nl80211_txattr_policy, info->extack);
3924 if (err)
3925 return err;
3926 if (tb[NL80211_TXRATE_LEGACY]) {
3927 mask->control[band].legacy = rateset_to_mask(
3928 sband,
3929 nla_data(tb[NL80211_TXRATE_LEGACY]),
3930 nla_len(tb[NL80211_TXRATE_LEGACY]));
3931 if ((mask->control[band].legacy == 0) &&
3932 nla_len(tb[NL80211_TXRATE_LEGACY]))
3933 return -EINVAL;
3934 }
3935 if (tb[NL80211_TXRATE_HT]) {
3936 if (!ht_rateset_to_mask(
3937 sband,
3938 nla_data(tb[NL80211_TXRATE_HT]),
3939 nla_len(tb[NL80211_TXRATE_HT]),
3940 mask->control[band].ht_mcs))
3941 return -EINVAL;
3942 }
3943 if (tb[NL80211_TXRATE_VHT]) {
3944 if (!vht_set_mcs_mask(
3945 sband,
3946 nla_data(tb[NL80211_TXRATE_VHT]),
3947 mask->control[band].vht_mcs))
3948 return -EINVAL;
3949 }
3950 if (tb[NL80211_TXRATE_GI]) {
3951 mask->control[band].gi =
3952 nla_get_u8(tb[NL80211_TXRATE_GI]);
3953 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3954 return -EINVAL;
3955 }
3956
3957 if (mask->control[band].legacy == 0) {
3958 /* don't allow empty legacy rates if HT or VHT
3959 * are not even supported.
3960 */
3961 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3962 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3963 return -EINVAL;
3964
3965 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3966 if (mask->control[band].ht_mcs[i])
3967 goto out;
3968
3969 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3970 if (mask->control[band].vht_mcs[i])
3971 goto out;
3972
3973 /* legacy and mcs rates may not be both empty */
3974 return -EINVAL;
3975 }
3976 }
3977
3978out:
3979 return 0;
3980}
3981
3982static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3983 enum nl80211_band band,
3984 struct cfg80211_bitrate_mask *beacon_rate)
3985{
3986 u32 count_ht, count_vht, i;
3987 u32 rate = beacon_rate->control[band].legacy;
3988
3989 /* Allow only one rate */
3990 if (hweight32(rate) > 1)
3991 return -EINVAL;
3992
3993 count_ht = 0;
3994 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3995 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3996 return -EINVAL;
3997 } else if (beacon_rate->control[band].ht_mcs[i]) {
3998 count_ht++;
3999 if (count_ht > 1)
4000 return -EINVAL;
4001 }
4002 if (count_ht && rate)
4003 return -EINVAL;
4004 }
4005
4006 count_vht = 0;
4007 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4008 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4009 return -EINVAL;
4010 } else if (beacon_rate->control[band].vht_mcs[i]) {
4011 count_vht++;
4012 if (count_vht > 1)
4013 return -EINVAL;
4014 }
4015 if (count_vht && rate)
4016 return -EINVAL;
4017 }
4018
4019 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4020 return -EINVAL;
4021
4022 if (rate &&
4023 !wiphy_ext_feature_isset(&rdev->wiphy,
4024 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4025 return -EINVAL;
4026 if (count_ht &&
4027 !wiphy_ext_feature_isset(&rdev->wiphy,
4028 NL80211_EXT_FEATURE_BEACON_RATE_HT))
4029 return -EINVAL;
4030 if (count_vht &&
4031 !wiphy_ext_feature_isset(&rdev->wiphy,
4032 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4033 return -EINVAL;
4034
4035 return 0;
4036}
4037
4038static int nl80211_parse_beacon(struct nlattr *attrs[],
4039 struct cfg80211_beacon_data *bcn)
4040{
4041 bool haveinfo = false;
4042
4043 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
4044 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
4045 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
4046 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
4047 return -EINVAL;
4048
4049 memset(bcn, 0, sizeof(*bcn));
4050
4051 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4052 int ret = validate_beacon_head(attrs[NL80211_ATTR_BEACON_HEAD],
4053 NULL);
4054
4055 if (ret)
4056 return ret;
4057
4058 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4059 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4060 if (!bcn->head_len)
4061 return -EINVAL;
4062 haveinfo = true;
4063 }
4064
4065 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4066 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4067 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4068 haveinfo = true;
4069 }
4070
4071 if (!haveinfo)
4072 return -EINVAL;
4073
4074 if (attrs[NL80211_ATTR_IE]) {
4075 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4076 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4077 }
4078
4079 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4080 bcn->proberesp_ies =
4081 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4082 bcn->proberesp_ies_len =
4083 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4084 }
4085
4086 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4087 bcn->assocresp_ies =
4088 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4089 bcn->assocresp_ies_len =
4090 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4091 }
4092
4093 if (attrs[NL80211_ATTR_PROBE_RESP]) {
4094 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4095 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4096 }
4097
4098 return 0;
4099}
4100
4101static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4102 const u8 *rates)
4103{
4104 int i;
4105
4106 if (!rates)
4107 return;
4108
4109 for (i = 0; i < rates[1]; i++) {
4110 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4111 params->ht_required = true;
4112 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4113 params->vht_required = true;
4114 }
4115}
4116
4117/*
4118 * Since the nl80211 API didn't include, from the beginning, attributes about
4119 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4120 * benefit of drivers that rebuild IEs in the firmware.
4121 */
4122static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4123{
4124 const struct cfg80211_beacon_data *bcn = &params->beacon;
4125 size_t ies_len = bcn->tail_len;
4126 const u8 *ies = bcn->tail;
4127 const u8 *rates;
4128 const u8 *cap;
4129
4130 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4131 nl80211_check_ap_rate_selectors(params, rates);
4132
4133 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4134 nl80211_check_ap_rate_selectors(params, rates);
4135
4136 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4137 if (cap && cap[1] >= sizeof(*params->ht_cap))
4138 params->ht_cap = (void *)(cap + 2);
4139 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4140 if (cap && cap[1] >= sizeof(*params->vht_cap))
4141 params->vht_cap = (void *)(cap + 2);
4142}
4143
4144static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4145 struct cfg80211_ap_settings *params)
4146{
4147 struct wireless_dev *wdev;
4148 bool ret = false;
4149
4150 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4151 if (wdev->iftype != NL80211_IFTYPE_AP &&
4152 wdev->iftype != NL80211_IFTYPE_P2P_GO)
4153 continue;
4154
4155 if (!wdev->preset_chandef.chan)
4156 continue;
4157
4158 params->chandef = wdev->preset_chandef;
4159 ret = true;
4160 break;
4161 }
4162
4163 return ret;
4164}
4165
4166static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4167 enum nl80211_auth_type auth_type,
4168 enum nl80211_commands cmd)
4169{
4170 if (auth_type > NL80211_AUTHTYPE_MAX)
4171 return false;
4172
4173 switch (cmd) {
4174 case NL80211_CMD_AUTHENTICATE:
4175 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4176 auth_type == NL80211_AUTHTYPE_SAE)
4177 return false;
4178 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4179 NL80211_EXT_FEATURE_FILS_STA) &&
4180 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4181 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4182 auth_type == NL80211_AUTHTYPE_FILS_PK))
4183 return false;
4184 return true;
4185 case NL80211_CMD_CONNECT:
4186//tianyan@2021.7.27 modify for add wifi6 module start
4187 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4188 !wiphy_ext_feature_isset(&rdev->wiphy,
4189 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4190 auth_type == NL80211_AUTHTYPE_SAE)
4191//tianyan@2021.7.27 modify for add wifi6 module end
4192 return false;
4193
4194 /* FILS with SK PFS or PK not supported yet */
4195 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4196 auth_type == NL80211_AUTHTYPE_FILS_PK)
4197 return false;
4198 if (!wiphy_ext_feature_isset(
4199 &rdev->wiphy,
4200 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4201 auth_type == NL80211_AUTHTYPE_FILS_SK)
4202 return false;
4203 return true;
4204 case NL80211_CMD_START_AP:
4205 /* SAE not supported yet */
4206 if (auth_type == NL80211_AUTHTYPE_SAE)
4207 return false;
4208 /* FILS not supported yet */
4209 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4210 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4211 auth_type == NL80211_AUTHTYPE_FILS_PK)
4212 return false;
4213 return true;
4214 default:
4215 return false;
4216 }
4217}
4218
4219static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4220{
4221 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4222 struct net_device *dev = info->user_ptr[1];
4223 struct wireless_dev *wdev = dev->ieee80211_ptr;
4224 struct cfg80211_ap_settings params;
4225 int err;
4226
4227 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4228 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4229 return -EOPNOTSUPP;
4230
4231 if (!rdev->ops->start_ap)
4232 return -EOPNOTSUPP;
4233
4234 if (wdev->beacon_interval)
4235 return -EALREADY;
4236
4237 memset(&params, 0, sizeof(params));
4238
4239 /* these are required for START_AP */
4240 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4241 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4242 !info->attrs[NL80211_ATTR_BEACON_HEAD])
4243 return -EINVAL;
4244
4245 err = nl80211_parse_beacon(info->attrs, &params.beacon);
4246 if (err)
4247 return err;
4248
4249 params.beacon_interval =
4250 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4251 params.dtim_period =
4252 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4253
4254 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4255 params.beacon_interval);
4256 if (err)
4257 return err;
4258
4259 /*
4260 * In theory, some of these attributes should be required here
4261 * but since they were not used when the command was originally
4262 * added, keep them optional for old user space programs to let
4263 * them continue to work with drivers that do not need the
4264 * additional information -- drivers must check!
4265 */
4266 if (info->attrs[NL80211_ATTR_SSID]) {
4267 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4268 params.ssid_len =
4269 nla_len(info->attrs[NL80211_ATTR_SSID]);
4270 if (params.ssid_len == 0 ||
4271 params.ssid_len > IEEE80211_MAX_SSID_LEN)
4272 return -EINVAL;
4273 }
4274
4275 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
4276 params.hidden_ssid = nla_get_u32(
4277 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4278 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
4279 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
4280 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
4281 return -EINVAL;
4282 }
4283
4284 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4285
4286 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4287 params.auth_type = nla_get_u32(
4288 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4289 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4290 NL80211_CMD_START_AP))
4291 return -EINVAL;
4292 } else
4293 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4294
4295 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4296 NL80211_MAX_NR_CIPHER_SUITES);
4297 if (err)
4298 return err;
4299
4300 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4301 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4302 return -EOPNOTSUPP;
4303 params.inactivity_timeout = nla_get_u16(
4304 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4305 }
4306
4307 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4308 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4309 return -EINVAL;
4310 params.p2p_ctwindow =
4311 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4312 if (params.p2p_ctwindow > 127)
4313 return -EINVAL;
4314 if (params.p2p_ctwindow != 0 &&
4315 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4316 return -EINVAL;
4317 }
4318
4319 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4320 u8 tmp;
4321
4322 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4323 return -EINVAL;
4324 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4325 if (tmp > 1)
4326 return -EINVAL;
4327 params.p2p_opp_ps = tmp;
4328 if (params.p2p_opp_ps != 0 &&
4329 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4330 return -EINVAL;
4331 }
4332
4333 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4334 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4335 if (err)
4336 return err;
4337 } else if (wdev->preset_chandef.chan) {
4338 params.chandef = wdev->preset_chandef;
4339 } else if (!nl80211_get_ap_channel(rdev, &params))
4340 return -EINVAL;
4341
4342 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4343 wdev->iftype))
4344 return -EINVAL;
4345
4346 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4347 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4348 if (err)
4349 return err;
4350
4351 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4352 &params.beacon_rate);
4353 if (err)
4354 return err;
4355 }
4356
4357 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4358 params.smps_mode =
4359 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4360 switch (params.smps_mode) {
4361 case NL80211_SMPS_OFF:
4362 break;
4363 case NL80211_SMPS_STATIC:
4364 if (!(rdev->wiphy.features &
4365 NL80211_FEATURE_STATIC_SMPS))
4366 return -EINVAL;
4367 break;
4368 case NL80211_SMPS_DYNAMIC:
4369 if (!(rdev->wiphy.features &
4370 NL80211_FEATURE_DYNAMIC_SMPS))
4371 return -EINVAL;
4372 break;
4373 default:
4374 return -EINVAL;
4375 }
4376 } else {
4377 params.smps_mode = NL80211_SMPS_OFF;
4378 }
4379
4380 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4381 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4382 return -EOPNOTSUPP;
4383
4384 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4385 params.acl = parse_acl_data(&rdev->wiphy, info);
4386 if (IS_ERR(params.acl))
4387 return PTR_ERR(params.acl);
4388 }
4389
4390 nl80211_calculate_ap_params(&params);
4391
4392//tianyan@2021.7.27 modify for add wifi6 module start
4393 if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4394 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4395//tianyan@2021.7.27 modify for add wifi6 module end
4396
4397 wdev_lock(wdev);
4398 err = rdev_start_ap(rdev, dev, &params);
4399 if (!err) {
4400 wdev->preset_chandef = params.chandef;
4401 wdev->beacon_interval = params.beacon_interval;
4402 wdev->chandef = params.chandef;
4403 wdev->ssid_len = params.ssid_len;
4404 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4405
4406 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4407 wdev->conn_owner_nlportid = info->snd_portid;
4408 }
4409 wdev_unlock(wdev);
4410
4411 kfree(params.acl);
4412
4413 return err;
4414}
4415
4416static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4417{
4418 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4419 struct net_device *dev = info->user_ptr[1];
4420 struct wireless_dev *wdev = dev->ieee80211_ptr;
4421 struct cfg80211_beacon_data params;
4422 int err;
4423
4424 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4425 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4426 return -EOPNOTSUPP;
4427
4428 if (!rdev->ops->change_beacon)
4429 return -EOPNOTSUPP;
4430
4431 if (!wdev->beacon_interval)
4432 return -EINVAL;
4433
4434 err = nl80211_parse_beacon(info->attrs, &params);
4435 if (err)
4436 return err;
4437
4438 wdev_lock(wdev);
4439 err = rdev_change_beacon(rdev, dev, &params);
4440 wdev_unlock(wdev);
4441
4442 return err;
4443}
4444
4445static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4446{
4447 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4448 struct net_device *dev = info->user_ptr[1];
4449
4450 return cfg80211_stop_ap(rdev, dev, false);
4451}
4452
4453static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4454 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4455 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4456 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4457 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4458 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4459 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4460};
4461
4462static int parse_station_flags(struct genl_info *info,
4463 enum nl80211_iftype iftype,
4464 struct station_parameters *params)
4465{
4466 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4467 struct nlattr *nla;
4468 int flag;
4469
4470 /*
4471 * Try parsing the new attribute first so userspace
4472 * can specify both for older kernels.
4473 */
4474 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4475 if (nla) {
4476 struct nl80211_sta_flag_update *sta_flags;
4477
4478 sta_flags = nla_data(nla);
4479 params->sta_flags_mask = sta_flags->mask;
4480 params->sta_flags_set = sta_flags->set;
4481 params->sta_flags_set &= params->sta_flags_mask;
4482 if ((params->sta_flags_mask |
4483 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4484 return -EINVAL;
4485 return 0;
4486 }
4487
4488 /* if present, parse the old attribute */
4489
4490 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4491 if (!nla)
4492 return 0;
4493
4494 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4495 sta_flags_policy, info->extack))
4496 return -EINVAL;
4497
4498 /*
4499 * Only allow certain flags for interface types so that
4500 * other attributes are silently ignored. Remember that
4501 * this is backward compatibility code with old userspace
4502 * and shouldn't be hit in other cases anyway.
4503 */
4504 switch (iftype) {
4505 case NL80211_IFTYPE_AP:
4506 case NL80211_IFTYPE_AP_VLAN:
4507 case NL80211_IFTYPE_P2P_GO:
4508 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4509 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4510 BIT(NL80211_STA_FLAG_WME) |
4511 BIT(NL80211_STA_FLAG_MFP);
4512 break;
4513 case NL80211_IFTYPE_P2P_CLIENT:
4514 case NL80211_IFTYPE_STATION:
4515 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4516 BIT(NL80211_STA_FLAG_TDLS_PEER);
4517 break;
4518 case NL80211_IFTYPE_MESH_POINT:
4519 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4520 BIT(NL80211_STA_FLAG_MFP) |
4521 BIT(NL80211_STA_FLAG_AUTHORIZED);
4522 break;
4523 default:
4524 return -EINVAL;
4525 }
4526
4527 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4528 if (flags[flag]) {
4529 params->sta_flags_set |= (1<<flag);
4530
4531 /* no longer support new API additions in old API */
4532 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4533 return -EINVAL;
4534 }
4535 }
4536
4537 return 0;
4538}
4539
4540static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4541 int attr)
4542{
4543 struct nlattr *rate;
4544 u32 bitrate;
4545 u16 bitrate_compat;
4546 enum nl80211_rate_info rate_flg;
4547
4548 rate = nla_nest_start(msg, attr);
4549 if (!rate)
4550 return false;
4551
4552 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4553 bitrate = cfg80211_calculate_bitrate(info);
4554 /* report 16-bit bitrate only if we can */
4555 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4556 if (bitrate > 0 &&
4557 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4558 return false;
4559 if (bitrate_compat > 0 &&
4560 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4561 return false;
4562
4563 switch (info->bw) {
4564 case RATE_INFO_BW_5:
4565 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4566 break;
4567 case RATE_INFO_BW_10:
4568 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4569 break;
4570 default:
4571 WARN_ON(1);
4572 /* fall through */
4573 case RATE_INFO_BW_20:
4574 rate_flg = 0;
4575 break;
4576 case RATE_INFO_BW_40:
4577 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4578 break;
4579 case RATE_INFO_BW_80:
4580 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4581 break;
4582 case RATE_INFO_BW_160:
4583 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4584 break;
4585 case RATE_INFO_BW_HE_RU:
4586 rate_flg = 0;
4587 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
4588 }
4589
4590 if (rate_flg && nla_put_flag(msg, rate_flg))
4591 return false;
4592
4593 if (info->flags & RATE_INFO_FLAGS_MCS) {
4594 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4595 return false;
4596 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4597 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4598 return false;
4599 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4600 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4601 return false;
4602 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4603 return false;
4604 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4605 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4606 return false;
4607 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
4608 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
4609 return false;
4610 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
4611 return false;
4612 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
4613 return false;
4614 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
4615 return false;
4616 if (info->bw == RATE_INFO_BW_HE_RU &&
4617 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
4618 info->he_ru_alloc))
4619 return false;
4620 }
4621
4622 nla_nest_end(msg, rate);
4623 return true;
4624}
4625
4626static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4627 int id)
4628{
4629 void *attr;
4630 int i = 0;
4631
4632 if (!mask)
4633 return true;
4634
4635 attr = nla_nest_start(msg, id);
4636 if (!attr)
4637 return false;
4638
4639 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4640 if (!(mask & BIT(i)))
4641 continue;
4642
4643 if (nla_put_u8(msg, i, signal[i]))
4644 return false;
4645 }
4646
4647 nla_nest_end(msg, attr);
4648
4649 return true;
4650}
4651
4652static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4653 u32 seq, int flags,
4654 struct cfg80211_registered_device *rdev,
4655 struct net_device *dev,
4656 const u8 *mac_addr, struct station_info *sinfo)
4657{
4658 void *hdr;
4659 struct nlattr *sinfoattr, *bss_param;
4660
4661 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4662 if (!hdr) {
4663 cfg80211_sinfo_release_content(sinfo);
4664 return -1;
4665 }
4666
4667 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4668 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4669 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4670 goto nla_put_failure;
4671
4672 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4673 if (!sinfoattr)
4674 goto nla_put_failure;
4675
4676#define PUT_SINFO(attr, memb, type) do { \
4677 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4678 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
4679 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4680 sinfo->memb)) \
4681 goto nla_put_failure; \
4682 } while (0)
4683#define PUT_SINFO_U64(attr, memb) do { \
4684 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
4685 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4686 sinfo->memb, NL80211_STA_INFO_PAD)) \
4687 goto nla_put_failure; \
4688 } while (0)
4689
4690 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4691 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4692
4693 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
4694 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
4695 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4696 (u32)sinfo->rx_bytes))
4697 goto nla_put_failure;
4698
4699 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
4700 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
4701 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4702 (u32)sinfo->tx_bytes))
4703 goto nla_put_failure;
4704
4705 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4706 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4707 PUT_SINFO(LLID, llid, u16);
4708 PUT_SINFO(PLID, plid, u16);
4709 PUT_SINFO(PLINK_STATE, plink_state, u8);
4710 PUT_SINFO_U64(RX_DURATION, rx_duration);
4711
4712 switch (rdev->wiphy.signal_type) {
4713 case CFG80211_SIGNAL_TYPE_MBM:
4714 PUT_SINFO(SIGNAL, signal, u8);
4715 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4716 break;
4717 default:
4718 break;
4719 }
4720 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4721 if (!nl80211_put_signal(msg, sinfo->chains,
4722 sinfo->chain_signal,
4723 NL80211_STA_INFO_CHAIN_SIGNAL))
4724 goto nla_put_failure;
4725 }
4726 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4727 if (!nl80211_put_signal(msg, sinfo->chains,
4728 sinfo->chain_signal_avg,
4729 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4730 goto nla_put_failure;
4731 }
4732 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
4733 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4734 NL80211_STA_INFO_TX_BITRATE))
4735 goto nla_put_failure;
4736 }
4737 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
4738 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4739 NL80211_STA_INFO_RX_BITRATE))
4740 goto nla_put_failure;
4741 }
4742
4743 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4744 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4745 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4746 PUT_SINFO(TX_FAILED, tx_failed, u32);
4747 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4748 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4749 PUT_SINFO(LOCAL_PM, local_pm, u32);
4750 PUT_SINFO(PEER_PM, peer_pm, u32);
4751 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4752
4753 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
4754 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4755 if (!bss_param)
4756 goto nla_put_failure;
4757
4758 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4759 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4760 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4761 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4762 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4763 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4764 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4765 sinfo->bss_param.dtim_period) ||
4766 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4767 sinfo->bss_param.beacon_interval))
4768 goto nla_put_failure;
4769
4770 nla_nest_end(msg, bss_param);
4771 }
4772 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
4773 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4774 sizeof(struct nl80211_sta_flag_update),
4775 &sinfo->sta_flags))
4776 goto nla_put_failure;
4777
4778 PUT_SINFO_U64(T_OFFSET, t_offset);
4779 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4780 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4781 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4782 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
4783 if (wiphy_ext_feature_isset(&rdev->wiphy,
4784 NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT))
4785 PUT_SINFO(DATA_ACK_SIGNAL_AVG, avg_ack_signal, s8);
4786
4787#undef PUT_SINFO
4788#undef PUT_SINFO_U64
4789
4790 if (sinfo->pertid) {
4791 struct nlattr *tidsattr;
4792 int tid;
4793
4794 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4795 if (!tidsattr)
4796 goto nla_put_failure;
4797
4798 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4799 struct cfg80211_tid_stats *tidstats;
4800 struct nlattr *tidattr;
4801
4802 tidstats = &sinfo->pertid[tid];
4803
4804 if (!tidstats->filled)
4805 continue;
4806
4807 tidattr = nla_nest_start(msg, tid + 1);
4808 if (!tidattr)
4809 goto nla_put_failure;
4810
4811#define PUT_TIDVAL_U64(attr, memb) do { \
4812 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4813 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4814 tidstats->memb, NL80211_TID_STATS_PAD)) \
4815 goto nla_put_failure; \
4816 } while (0)
4817
4818 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4819 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4820 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4821 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4822
4823#undef PUT_TIDVAL_U64
4824 if ((tidstats->filled &
4825 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
4826 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
4827 NL80211_TID_STATS_TXQ_STATS))
4828 goto nla_put_failure;
4829
4830 nla_nest_end(msg, tidattr);
4831 }
4832
4833 nla_nest_end(msg, tidsattr);
4834 }
4835
4836 nla_nest_end(msg, sinfoattr);
4837
4838 if (sinfo->assoc_req_ies_len &&
4839 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4840 sinfo->assoc_req_ies))
4841 goto nla_put_failure;
4842
4843 cfg80211_sinfo_release_content(sinfo);
4844 genlmsg_end(msg, hdr);
4845 return 0;
4846
4847 nla_put_failure:
4848 cfg80211_sinfo_release_content(sinfo);
4849 genlmsg_cancel(msg, hdr);
4850 return -EMSGSIZE;
4851}
4852
4853static int nl80211_dump_station(struct sk_buff *skb,
4854 struct netlink_callback *cb)
4855{
4856 struct station_info sinfo;
4857 struct cfg80211_registered_device *rdev;
4858 struct wireless_dev *wdev;
4859 u8 mac_addr[ETH_ALEN];
4860 int sta_idx = cb->args[2];
4861 int err;
4862
4863 rtnl_lock();
4864 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4865 if (err)
4866 goto out_err;
4867
4868 if (!wdev->netdev) {
4869 err = -EINVAL;
4870 goto out_err;
4871 }
4872
4873 if (!rdev->ops->dump_station) {
4874 err = -EOPNOTSUPP;
4875 goto out_err;
4876 }
4877
4878 while (1) {
4879 memset(&sinfo, 0, sizeof(sinfo));
4880 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4881 mac_addr, &sinfo);
4882 if (err == -ENOENT)
4883 break;
4884 if (err)
4885 goto out_err;
4886
4887 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4888 NETLINK_CB(cb->skb).portid,
4889 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4890 rdev, wdev->netdev, mac_addr,
4891 &sinfo) < 0)
4892 goto out;
4893
4894 sta_idx++;
4895 }
4896
4897 out:
4898 cb->args[2] = sta_idx;
4899 err = skb->len;
4900 out_err:
4901 rtnl_unlock();
4902
4903 return err;
4904}
4905
4906static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4907{
4908 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4909 struct net_device *dev = info->user_ptr[1];
4910 struct station_info sinfo;
4911 struct sk_buff *msg;
4912 u8 *mac_addr = NULL;
4913 int err;
4914
4915 memset(&sinfo, 0, sizeof(sinfo));
4916
4917 if (!info->attrs[NL80211_ATTR_MAC])
4918 return -EINVAL;
4919
4920 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4921
4922 if (!rdev->ops->get_station)
4923 return -EOPNOTSUPP;
4924
4925 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4926 if (err)
4927 return err;
4928
4929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4930 if (!msg) {
4931 cfg80211_sinfo_release_content(&sinfo);
4932 return -ENOMEM;
4933 }
4934
4935 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4936 info->snd_portid, info->snd_seq, 0,
4937 rdev, dev, mac_addr, &sinfo) < 0) {
4938 nlmsg_free(msg);
4939 return -ENOBUFS;
4940 }
4941
4942 return genlmsg_reply(msg, info);
4943}
4944
4945int cfg80211_check_station_change(struct wiphy *wiphy,
4946 struct station_parameters *params,
4947 enum cfg80211_station_type statype)
4948{
4949 if (params->listen_interval != -1 &&
4950 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4951 return -EINVAL;
4952
4953 if (params->support_p2p_ps != -1 &&
4954 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4955 return -EINVAL;
4956
4957 if (params->aid &&
4958 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4959 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4960 return -EINVAL;
4961
4962 /* When you run into this, adjust the code below for the new flag */
4963 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4964
4965 switch (statype) {
4966 case CFG80211_STA_MESH_PEER_KERNEL:
4967 case CFG80211_STA_MESH_PEER_USER:
4968 /*
4969 * No ignoring the TDLS flag here -- the userspace mesh
4970 * code doesn't have the bug of including TDLS in the
4971 * mask everywhere.
4972 */
4973 if (params->sta_flags_mask &
4974 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4975 BIT(NL80211_STA_FLAG_MFP) |
4976 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4977 return -EINVAL;
4978 break;
4979 case CFG80211_STA_TDLS_PEER_SETUP:
4980 case CFG80211_STA_TDLS_PEER_ACTIVE:
4981 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4982 return -EINVAL;
4983 /* ignore since it can't change */
4984 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4985 break;
4986 default:
4987 /* disallow mesh-specific things */
4988 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4989 return -EINVAL;
4990 if (params->local_pm)
4991 return -EINVAL;
4992 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4993 return -EINVAL;
4994 }
4995
4996 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4997 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4998 /* TDLS can't be set, ... */
4999 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5000 return -EINVAL;
5001 /*
5002 * ... but don't bother the driver with it. This works around
5003 * a hostapd/wpa_supplicant issue -- it always includes the
5004 * TLDS_PEER flag in the mask even for AP mode.
5005 */
5006 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5007 }
5008
5009 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5010 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5011 /* reject other things that can't change */
5012 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5013 return -EINVAL;
5014 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5015 return -EINVAL;
5016 if (params->supported_rates)
5017 return -EINVAL;
5018 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5019 params->he_capa)
5020 return -EINVAL;
5021 }
5022
5023 if (statype != CFG80211_STA_AP_CLIENT &&
5024 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5025 if (params->vlan)
5026 return -EINVAL;
5027 }
5028
5029 switch (statype) {
5030 case CFG80211_STA_AP_MLME_CLIENT:
5031 /* Use this only for authorizing/unauthorizing a station */
5032 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5033 return -EOPNOTSUPP;
5034 break;
5035 case CFG80211_STA_AP_CLIENT:
5036 case CFG80211_STA_AP_CLIENT_UNASSOC:
5037 /* accept only the listed bits */
5038 if (params->sta_flags_mask &
5039 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5040 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5041 BIT(NL80211_STA_FLAG_ASSOCIATED) |
5042 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5043 BIT(NL80211_STA_FLAG_WME) |
5044 BIT(NL80211_STA_FLAG_MFP)))
5045 return -EINVAL;
5046
5047 /* but authenticated/associated only if driver handles it */
5048 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5049 params->sta_flags_mask &
5050 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5051 BIT(NL80211_STA_FLAG_ASSOCIATED)))
5052 return -EINVAL;
5053 break;
5054 case CFG80211_STA_IBSS:
5055 case CFG80211_STA_AP_STA:
5056 /* reject any changes other than AUTHORIZED */
5057 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5058 return -EINVAL;
5059 break;
5060 case CFG80211_STA_TDLS_PEER_SETUP:
5061 /* reject any changes other than AUTHORIZED or WME */
5062 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5063 BIT(NL80211_STA_FLAG_WME)))
5064 return -EINVAL;
5065 /* force (at least) rates when authorizing */
5066 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5067 !params->supported_rates)
5068 return -EINVAL;
5069 break;
5070 case CFG80211_STA_TDLS_PEER_ACTIVE:
5071 /* reject any changes */
5072 return -EINVAL;
5073 case CFG80211_STA_MESH_PEER_KERNEL:
5074 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5075 return -EINVAL;
5076 break;
5077 case CFG80211_STA_MESH_PEER_USER:
5078 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5079 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5080 return -EINVAL;
5081 break;
5082 }
5083
5084 /*
5085 * Older kernel versions ignored this attribute entirely, so don't
5086 * reject attempts to update it but mark it as unused instead so the
5087 * driver won't look at the data.
5088 */
5089 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5090 statype != CFG80211_STA_TDLS_PEER_SETUP)
5091 params->opmode_notif_used = false;
5092
5093 return 0;
5094}
5095EXPORT_SYMBOL(cfg80211_check_station_change);
5096
5097/*
5098 * Get vlan interface making sure it is running and on the right wiphy.
5099 */
5100static struct net_device *get_vlan(struct genl_info *info,
5101 struct cfg80211_registered_device *rdev)
5102{
5103 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5104 struct net_device *v;
5105 int ret;
5106
5107 if (!vlanattr)
5108 return NULL;
5109
5110 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5111 if (!v)
5112 return ERR_PTR(-ENODEV);
5113
5114 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5115 ret = -EINVAL;
5116 goto error;
5117 }
5118
5119 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5120 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5121 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5122 ret = -EINVAL;
5123 goto error;
5124 }
5125
5126 if (!netif_running(v)) {
5127 ret = -ENETDOWN;
5128 goto error;
5129 }
5130
5131 return v;
5132 error:
5133 dev_put(v);
5134 return ERR_PTR(ret);
5135}
5136
5137static const struct nla_policy
5138nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5139 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5140 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5141};
5142
5143static int nl80211_parse_sta_wme(struct genl_info *info,
5144 struct station_parameters *params)
5145{
5146 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5147 struct nlattr *nla;
5148 int err;
5149
5150 /* parse WME attributes if present */
5151 if (!info->attrs[NL80211_ATTR_STA_WME])
5152 return 0;
5153
5154 nla = info->attrs[NL80211_ATTR_STA_WME];
5155 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
5156 nl80211_sta_wme_policy, info->extack);
5157 if (err)
5158 return err;
5159
5160 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5161 params->uapsd_queues = nla_get_u8(
5162 tb[NL80211_STA_WME_UAPSD_QUEUES]);
5163 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5164 return -EINVAL;
5165
5166 if (tb[NL80211_STA_WME_MAX_SP])
5167 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5168
5169 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5170 return -EINVAL;
5171
5172 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5173
5174 return 0;
5175}
5176
5177static int nl80211_parse_sta_channel_info(struct genl_info *info,
5178 struct station_parameters *params)
5179{
5180 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5181 params->supported_channels =
5182 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5183 params->supported_channels_len =
5184 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5185 /*
5186 * Need to include at least one (first channel, number of
5187 * channels) tuple for each subband, and must have proper
5188 * tuples for the rest of the data as well.
5189 */
5190 if (params->supported_channels_len < 2)
5191 return -EINVAL;
5192 if (params->supported_channels_len % 2)
5193 return -EINVAL;
5194 }
5195
5196 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5197 params->supported_oper_classes =
5198 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5199 params->supported_oper_classes_len =
5200 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5201 /*
5202 * The value of the Length field of the Supported Operating
5203 * Classes element is between 2 and 253.
5204 */
5205 if (params->supported_oper_classes_len < 2 ||
5206 params->supported_oper_classes_len > 253)
5207 return -EINVAL;
5208 }
5209 return 0;
5210}
5211
5212static int nl80211_set_station_tdls(struct genl_info *info,
5213 struct station_parameters *params)
5214{
5215 int err;
5216 /* Dummy STA entry gets updated once the peer capabilities are known */
5217 if (info->attrs[NL80211_ATTR_PEER_AID])
5218 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5219 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5220 params->ht_capa =
5221 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5222 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5223 params->vht_capa =
5224 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5225 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5226 params->he_capa =
5227 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5228 params->he_capa_len =
5229 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5230
5231 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5232 return -EINVAL;
5233 }
5234
5235 err = nl80211_parse_sta_channel_info(info, params);
5236 if (err)
5237 return err;
5238
5239 return nl80211_parse_sta_wme(info, params);
5240}
5241
5242static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5243{
5244 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5245 struct net_device *dev = info->user_ptr[1];
5246 struct station_parameters params;
5247 u8 *mac_addr;
5248 int err;
5249
5250 memset(&params, 0, sizeof(params));
5251
5252 if (!rdev->ops->change_station)
5253 return -EOPNOTSUPP;
5254
5255 /*
5256 * AID and listen_interval properties can be set only for unassociated
5257 * station. Include these parameters here and will check them in
5258 * cfg80211_check_station_change().
5259 */
5260 if (info->attrs[NL80211_ATTR_STA_AID])
5261 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5262
5263 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5264 params.listen_interval =
5265 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5266 else
5267 params.listen_interval = -1;
5268
5269 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5270 u8 tmp;
5271
5272 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5273 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5274 return -EINVAL;
5275
5276 params.support_p2p_ps = tmp;
5277 } else {
5278 params.support_p2p_ps = -1;
5279 }
5280
5281 if (!info->attrs[NL80211_ATTR_MAC])
5282 return -EINVAL;
5283
5284 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5285
5286 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5287 params.supported_rates =
5288 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5289 params.supported_rates_len =
5290 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5291 }
5292
5293 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5294 params.capability =
5295 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5296 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5297 }
5298
5299 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5300 params.ext_capab =
5301 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5302 params.ext_capab_len =
5303 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5304 }
5305
5306 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5307 return -EINVAL;
5308
5309 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5310 params.plink_action =
5311 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5312 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5313 return -EINVAL;
5314 }
5315
5316 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5317 params.plink_state =
5318 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5319 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
5320 return -EINVAL;
5321 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
5322 params.peer_aid = nla_get_u16(
5323 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5324 if (params.peer_aid > IEEE80211_MAX_AID)
5325 return -EINVAL;
5326 }
5327 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5328 }
5329
5330 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
5331 enum nl80211_mesh_power_mode pm = nla_get_u32(
5332 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5333
5334 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
5335 pm > NL80211_MESH_POWER_MAX)
5336 return -EINVAL;
5337
5338 params.local_pm = pm;
5339 }
5340
5341 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5342 params.opmode_notif_used = true;
5343 params.opmode_notif =
5344 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5345 }
5346
5347 /* Include parameters for TDLS peer (will check later) */
5348 err = nl80211_set_station_tdls(info, &params);
5349 if (err)
5350 return err;
5351
5352 params.vlan = get_vlan(info, rdev);
5353 if (IS_ERR(params.vlan))
5354 return PTR_ERR(params.vlan);
5355
5356 switch (dev->ieee80211_ptr->iftype) {
5357 case NL80211_IFTYPE_AP:
5358 case NL80211_IFTYPE_AP_VLAN:
5359 case NL80211_IFTYPE_P2P_GO:
5360 case NL80211_IFTYPE_P2P_CLIENT:
5361 case NL80211_IFTYPE_STATION:
5362 case NL80211_IFTYPE_ADHOC:
5363 case NL80211_IFTYPE_MESH_POINT:
5364 break;
5365 default:
5366 err = -EOPNOTSUPP;
5367 goto out_put_vlan;
5368 }
5369
5370 /* driver will call cfg80211_check_station_change() */
5371 err = rdev_change_station(rdev, dev, mac_addr, &params);
5372
5373 out_put_vlan:
5374 if (params.vlan)
5375 dev_put(params.vlan);
5376
5377 return err;
5378}
5379
5380static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5381{
5382 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5383 int err;
5384 struct net_device *dev = info->user_ptr[1];
5385 struct station_parameters params;
5386 u8 *mac_addr = NULL;
5387 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5388 BIT(NL80211_STA_FLAG_ASSOCIATED);
5389
5390 memset(&params, 0, sizeof(params));
5391
5392 if (!rdev->ops->add_station)
5393 return -EOPNOTSUPP;
5394
5395 if (!info->attrs[NL80211_ATTR_MAC])
5396 return -EINVAL;
5397
5398 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5399 return -EINVAL;
5400
5401 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5402 return -EINVAL;
5403
5404 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5405 !info->attrs[NL80211_ATTR_PEER_AID])
5406 return -EINVAL;
5407
5408 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5409 params.supported_rates =
5410 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5411 params.supported_rates_len =
5412 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5413 params.listen_interval =
5414 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5415
5416 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5417 u8 tmp;
5418
5419 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5420 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5421 return -EINVAL;
5422
5423 params.support_p2p_ps = tmp;
5424 } else {
5425 /*
5426 * if not specified, assume it's supported for P2P GO interface,
5427 * and is NOT supported for AP interface
5428 */
5429 params.support_p2p_ps =
5430 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5431 }
5432
5433 if (info->attrs[NL80211_ATTR_PEER_AID])
5434 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5435 else
5436 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5437 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5438 return -EINVAL;
5439
5440 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5441 params.capability =
5442 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5443 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5444 }
5445
5446 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5447 params.ext_capab =
5448 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5449 params.ext_capab_len =
5450 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5451 }
5452
5453 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5454 params.ht_capa =
5455 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5456
5457 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5458 params.vht_capa =
5459 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5460
5461 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5462 params.he_capa =
5463 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5464 params.he_capa_len =
5465 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5466
5467 /* max len is validated in nla policy */
5468 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5469 return -EINVAL;
5470 }
5471
5472 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5473 params.opmode_notif_used = true;
5474 params.opmode_notif =
5475 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5476 }
5477
5478 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5479 params.plink_action =
5480 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5481 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5482 return -EINVAL;
5483 }
5484
5485 err = nl80211_parse_sta_channel_info(info, &params);
5486 if (err)
5487 return err;
5488
5489 err = nl80211_parse_sta_wme(info, &params);
5490 if (err)
5491 return err;
5492
5493 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5494 return -EINVAL;
5495
5496 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5497 * as userspace might just pass through the capabilities from the IEs
5498 * directly, rather than enforcing this restriction and returning an
5499 * error in this case.
5500 */
5501 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5502 params.ht_capa = NULL;
5503 params.vht_capa = NULL;
5504
5505 /* HE requires WME */
5506 if (params.he_capa_len)
5507 return -EINVAL;
5508 }
5509
5510 /* When you run into this, adjust the code below for the new flag */
5511 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5512
5513 switch (dev->ieee80211_ptr->iftype) {
5514 case NL80211_IFTYPE_AP:
5515 case NL80211_IFTYPE_AP_VLAN:
5516 case NL80211_IFTYPE_P2P_GO:
5517 /* ignore WME attributes if iface/sta is not capable */
5518 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5519 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5520 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5521
5522 /* TDLS peers cannot be added */
5523 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5524 info->attrs[NL80211_ATTR_PEER_AID])
5525 return -EINVAL;
5526 /* but don't bother the driver with it */
5527 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5528
5529 /* allow authenticated/associated only if driver handles it */
5530 if (!(rdev->wiphy.features &
5531 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5532 params.sta_flags_mask & auth_assoc)
5533 return -EINVAL;
5534
5535 /* Older userspace, or userspace wanting to be compatible with
5536 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5537 * and assoc flags in the mask, but assumes the station will be
5538 * added as associated anyway since this was the required driver
5539 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5540 * introduced.
5541 * In order to not bother drivers with this quirk in the API
5542 * set the flags in both the mask and set for new stations in
5543 * this case.
5544 */
5545 if (!(params.sta_flags_mask & auth_assoc)) {
5546 params.sta_flags_mask |= auth_assoc;
5547 params.sta_flags_set |= auth_assoc;
5548 }
5549
5550 /* must be last in here for error handling */
5551 params.vlan = get_vlan(info, rdev);
5552 if (IS_ERR(params.vlan))
5553 return PTR_ERR(params.vlan);
5554 break;
5555 case NL80211_IFTYPE_MESH_POINT:
5556 /* ignore uAPSD data */
5557 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5558
5559 /* associated is disallowed */
5560 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5561 return -EINVAL;
5562 /* TDLS peers cannot be added */
5563 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5564 info->attrs[NL80211_ATTR_PEER_AID])
5565 return -EINVAL;
5566 break;
5567 case NL80211_IFTYPE_STATION:
5568 case NL80211_IFTYPE_P2P_CLIENT:
5569 /* ignore uAPSD data */
5570 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5571
5572 /* these are disallowed */
5573 if (params.sta_flags_mask &
5574 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5575 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5576 return -EINVAL;
5577 /* Only TDLS peers can be added */
5578 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5579 return -EINVAL;
5580 /* Can only add if TDLS ... */
5581 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5582 return -EOPNOTSUPP;
5583 /* ... with external setup is supported */
5584 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5585 return -EOPNOTSUPP;
5586 /*
5587 * Older wpa_supplicant versions always mark the TDLS peer
5588 * as authorized, but it shouldn't yet be.
5589 */
5590 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5591 break;
5592 default:
5593 return -EOPNOTSUPP;
5594 }
5595
5596 /* be aware of params.vlan when changing code here */
5597
5598 err = rdev_add_station(rdev, dev, mac_addr, &params);
5599
5600 if (params.vlan)
5601 dev_put(params.vlan);
5602 return err;
5603}
5604
5605static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5606{
5607 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5608 struct net_device *dev = info->user_ptr[1];
5609 struct station_del_parameters params;
5610
5611 memset(&params, 0, sizeof(params));
5612
5613 if (info->attrs[NL80211_ATTR_MAC])
5614 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5615
5616 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5617 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5618 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5619 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5620 return -EINVAL;
5621
5622 if (!rdev->ops->del_station)
5623 return -EOPNOTSUPP;
5624
5625 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5626 params.subtype =
5627 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5628 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5629 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5630 return -EINVAL;
5631 } else {
5632 /* Default to Deauthentication frame */
5633 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5634 }
5635
5636 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5637 params.reason_code =
5638 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5639 if (params.reason_code == 0)
5640 return -EINVAL; /* 0 is reserved */
5641 } else {
5642 /* Default to reason code 2 */
5643 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5644 }
5645
5646 return rdev_del_station(rdev, dev, &params);
5647}
5648
5649static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5650 int flags, struct net_device *dev,
5651 u8 *dst, u8 *next_hop,
5652 struct mpath_info *pinfo)
5653{
5654 void *hdr;
5655 struct nlattr *pinfoattr;
5656
5657 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5658 if (!hdr)
5659 return -1;
5660
5661 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5662 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5663 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5664 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5665 goto nla_put_failure;
5666
5667 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5668 if (!pinfoattr)
5669 goto nla_put_failure;
5670 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5671 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5672 pinfo->frame_qlen))
5673 goto nla_put_failure;
5674 if (((pinfo->filled & MPATH_INFO_SN) &&
5675 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5676 ((pinfo->filled & MPATH_INFO_METRIC) &&
5677 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5678 pinfo->metric)) ||
5679 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5680 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5681 pinfo->exptime)) ||
5682 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5683 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5684 pinfo->flags)) ||
5685 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5686 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5687 pinfo->discovery_timeout)) ||
5688 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5689 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5690 pinfo->discovery_retries)))
5691 goto nla_put_failure;
5692
5693 nla_nest_end(msg, pinfoattr);
5694
5695 genlmsg_end(msg, hdr);
5696 return 0;
5697
5698 nla_put_failure:
5699 genlmsg_cancel(msg, hdr);
5700 return -EMSGSIZE;
5701}
5702
5703static int nl80211_dump_mpath(struct sk_buff *skb,
5704 struct netlink_callback *cb)
5705{
5706 struct mpath_info pinfo;
5707 struct cfg80211_registered_device *rdev;
5708 struct wireless_dev *wdev;
5709 u8 dst[ETH_ALEN];
5710 u8 next_hop[ETH_ALEN];
5711 int path_idx = cb->args[2];
5712 int err;
5713
5714 rtnl_lock();
5715 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5716 if (err)
5717 goto out_err;
5718
5719 if (!rdev->ops->dump_mpath) {
5720 err = -EOPNOTSUPP;
5721 goto out_err;
5722 }
5723
5724 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5725 err = -EOPNOTSUPP;
5726 goto out_err;
5727 }
5728
5729 while (1) {
5730 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5731 next_hop, &pinfo);
5732 if (err == -ENOENT)
5733 break;
5734 if (err)
5735 goto out_err;
5736
5737 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5738 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5739 wdev->netdev, dst, next_hop,
5740 &pinfo) < 0)
5741 goto out;
5742
5743 path_idx++;
5744 }
5745
5746 out:
5747 cb->args[2] = path_idx;
5748 err = skb->len;
5749 out_err:
5750 rtnl_unlock();
5751 return err;
5752}
5753
5754static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5755{
5756 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5757 int err;
5758 struct net_device *dev = info->user_ptr[1];
5759 struct mpath_info pinfo;
5760 struct sk_buff *msg;
5761 u8 *dst = NULL;
5762 u8 next_hop[ETH_ALEN];
5763
5764 memset(&pinfo, 0, sizeof(pinfo));
5765
5766 if (!info->attrs[NL80211_ATTR_MAC])
5767 return -EINVAL;
5768
5769 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5770
5771 if (!rdev->ops->get_mpath)
5772 return -EOPNOTSUPP;
5773
5774 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5775 return -EOPNOTSUPP;
5776
5777 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5778 if (err)
5779 return err;
5780
5781 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5782 if (!msg)
5783 return -ENOMEM;
5784
5785 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5786 dev, dst, next_hop, &pinfo) < 0) {
5787 nlmsg_free(msg);
5788 return -ENOBUFS;
5789 }
5790
5791 return genlmsg_reply(msg, info);
5792}
5793
5794static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5795{
5796 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5797 struct net_device *dev = info->user_ptr[1];
5798 u8 *dst = NULL;
5799 u8 *next_hop = NULL;
5800
5801 if (!info->attrs[NL80211_ATTR_MAC])
5802 return -EINVAL;
5803
5804 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5805 return -EINVAL;
5806
5807 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5808 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5809
5810 if (!rdev->ops->change_mpath)
5811 return -EOPNOTSUPP;
5812
5813 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5814 return -EOPNOTSUPP;
5815
5816 return rdev_change_mpath(rdev, dev, dst, next_hop);
5817}
5818
5819static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5820{
5821 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5822 struct net_device *dev = info->user_ptr[1];
5823 u8 *dst = NULL;
5824 u8 *next_hop = NULL;
5825
5826 if (!info->attrs[NL80211_ATTR_MAC])
5827 return -EINVAL;
5828
5829 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5830 return -EINVAL;
5831
5832 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5833 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5834
5835 if (!rdev->ops->add_mpath)
5836 return -EOPNOTSUPP;
5837
5838 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5839 return -EOPNOTSUPP;
5840
5841 return rdev_add_mpath(rdev, dev, dst, next_hop);
5842}
5843
5844static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5845{
5846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5847 struct net_device *dev = info->user_ptr[1];
5848 u8 *dst = NULL;
5849
5850 if (info->attrs[NL80211_ATTR_MAC])
5851 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5852
5853 if (!rdev->ops->del_mpath)
5854 return -EOPNOTSUPP;
5855
5856 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5857 return -EOPNOTSUPP;
5858
5859 return rdev_del_mpath(rdev, dev, dst);
5860}
5861
5862static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5863{
5864 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5865 int err;
5866 struct net_device *dev = info->user_ptr[1];
5867 struct mpath_info pinfo;
5868 struct sk_buff *msg;
5869 u8 *dst = NULL;
5870 u8 mpp[ETH_ALEN];
5871
5872 memset(&pinfo, 0, sizeof(pinfo));
5873
5874 if (!info->attrs[NL80211_ATTR_MAC])
5875 return -EINVAL;
5876
5877 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5878
5879 if (!rdev->ops->get_mpp)
5880 return -EOPNOTSUPP;
5881
5882 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5883 return -EOPNOTSUPP;
5884
5885 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5886 if (err)
5887 return err;
5888
5889 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5890 if (!msg)
5891 return -ENOMEM;
5892
5893 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5894 dev, dst, mpp, &pinfo) < 0) {
5895 nlmsg_free(msg);
5896 return -ENOBUFS;
5897 }
5898
5899 return genlmsg_reply(msg, info);
5900}
5901
5902static int nl80211_dump_mpp(struct sk_buff *skb,
5903 struct netlink_callback *cb)
5904{
5905 struct mpath_info pinfo;
5906 struct cfg80211_registered_device *rdev;
5907 struct wireless_dev *wdev;
5908 u8 dst[ETH_ALEN];
5909 u8 mpp[ETH_ALEN];
5910 int path_idx = cb->args[2];
5911 int err;
5912
5913 rtnl_lock();
5914 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5915 if (err)
5916 goto out_err;
5917
5918 if (!rdev->ops->dump_mpp) {
5919 err = -EOPNOTSUPP;
5920 goto out_err;
5921 }
5922
5923 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5924 err = -EOPNOTSUPP;
5925 goto out_err;
5926 }
5927
5928 while (1) {
5929 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5930 mpp, &pinfo);
5931 if (err == -ENOENT)
5932 break;
5933 if (err)
5934 goto out_err;
5935
5936 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5937 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5938 wdev->netdev, dst, mpp,
5939 &pinfo) < 0)
5940 goto out;
5941
5942 path_idx++;
5943 }
5944
5945 out:
5946 cb->args[2] = path_idx;
5947 err = skb->len;
5948 out_err:
5949 rtnl_unlock();
5950 return err;
5951}
5952
5953static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5954{
5955 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5956 struct net_device *dev = info->user_ptr[1];
5957 struct wireless_dev *wdev = dev->ieee80211_ptr;
5958 struct bss_parameters params;
5959 int err;
5960
5961 memset(&params, 0, sizeof(params));
5962 /* default to not changing parameters */
5963 params.use_cts_prot = -1;
5964 params.use_short_preamble = -1;
5965 params.use_short_slot_time = -1;
5966 params.ap_isolate = -1;
5967 params.ht_opmode = -1;
5968 params.p2p_ctwindow = -1;
5969 params.p2p_opp_ps = -1;
5970
5971 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5972 params.use_cts_prot =
5973 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5974 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5975 params.use_short_preamble =
5976 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5977 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5978 params.use_short_slot_time =
5979 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5980 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5981 params.basic_rates =
5982 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5983 params.basic_rates_len =
5984 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5985 }
5986 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5987 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5988 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5989 params.ht_opmode =
5990 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5991
5992 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5993 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5994 return -EINVAL;
5995 params.p2p_ctwindow =
5996 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5997 if (params.p2p_ctwindow < 0)
5998 return -EINVAL;
5999 if (params.p2p_ctwindow != 0 &&
6000 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6001 return -EINVAL;
6002 }
6003
6004 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6005 u8 tmp;
6006
6007 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6008 return -EINVAL;
6009 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6010 if (tmp > 1)
6011 return -EINVAL;
6012 params.p2p_opp_ps = tmp;
6013 if (params.p2p_opp_ps &&
6014 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6015 return -EINVAL;
6016 }
6017
6018 if (!rdev->ops->change_bss)
6019 return -EOPNOTSUPP;
6020
6021 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6022 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6023 return -EOPNOTSUPP;
6024
6025 wdev_lock(wdev);
6026 err = rdev_change_bss(rdev, dev, &params);
6027 wdev_unlock(wdev);
6028
6029 return err;
6030}
6031
6032static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6033{
6034 char *data = NULL;
6035 bool is_indoor;
6036 enum nl80211_user_reg_hint_type user_reg_hint_type;
6037 u32 owner_nlportid;
6038
6039 /*
6040 * You should only get this when cfg80211 hasn't yet initialized
6041 * completely when built-in to the kernel right between the time
6042 * window between nl80211_init() and regulatory_init(), if that is
6043 * even possible.
6044 */
6045 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6046 return -EINPROGRESS;
6047
6048 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6049 user_reg_hint_type =
6050 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6051 else
6052 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6053
6054 switch (user_reg_hint_type) {
6055 case NL80211_USER_REG_HINT_USER:
6056 case NL80211_USER_REG_HINT_CELL_BASE:
6057 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6058 return -EINVAL;
6059
6060 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6061 return regulatory_hint_user(data, user_reg_hint_type);
6062 case NL80211_USER_REG_HINT_INDOOR:
6063 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6064 owner_nlportid = info->snd_portid;
6065 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6066 } else {
6067 owner_nlportid = 0;
6068 is_indoor = true;
6069 }
6070
6071 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6072 default:
6073 return -EINVAL;
6074 }
6075}
6076
6077static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6078{
6079 return reg_reload_regdb();
6080}
6081
6082static int nl80211_get_mesh_config(struct sk_buff *skb,
6083 struct genl_info *info)
6084{
6085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6086 struct net_device *dev = info->user_ptr[1];
6087 struct wireless_dev *wdev = dev->ieee80211_ptr;
6088 struct mesh_config cur_params;
6089 int err = 0;
6090 void *hdr;
6091 struct nlattr *pinfoattr;
6092 struct sk_buff *msg;
6093
6094 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6095 return -EOPNOTSUPP;
6096
6097 if (!rdev->ops->get_mesh_config)
6098 return -EOPNOTSUPP;
6099
6100 wdev_lock(wdev);
6101 /* If not connected, get default parameters */
6102 if (!wdev->mesh_id_len)
6103 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6104 else
6105 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6106 wdev_unlock(wdev);
6107
6108 if (err)
6109 return err;
6110
6111 /* Draw up a netlink message to send back */
6112 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6113 if (!msg)
6114 return -ENOMEM;
6115 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6116 NL80211_CMD_GET_MESH_CONFIG);
6117 if (!hdr)
6118 goto out;
6119 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
6120 if (!pinfoattr)
6121 goto nla_put_failure;
6122 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6123 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6124 cur_params.dot11MeshRetryTimeout) ||
6125 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6126 cur_params.dot11MeshConfirmTimeout) ||
6127 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6128 cur_params.dot11MeshHoldingTimeout) ||
6129 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6130 cur_params.dot11MeshMaxPeerLinks) ||
6131 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6132 cur_params.dot11MeshMaxRetries) ||
6133 nla_put_u8(msg, NL80211_MESHCONF_TTL,
6134 cur_params.dot11MeshTTL) ||
6135 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6136 cur_params.element_ttl) ||
6137 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6138 cur_params.auto_open_plinks) ||
6139 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6140 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6141 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6142 cur_params.dot11MeshHWMPmaxPREQretries) ||
6143 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6144 cur_params.path_refresh_time) ||
6145 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6146 cur_params.min_discovery_timeout) ||
6147 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6148 cur_params.dot11MeshHWMPactivePathTimeout) ||
6149 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6150 cur_params.dot11MeshHWMPpreqMinInterval) ||
6151 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6152 cur_params.dot11MeshHWMPperrMinInterval) ||
6153 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6154 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6155 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6156 cur_params.dot11MeshHWMPRootMode) ||
6157 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6158 cur_params.dot11MeshHWMPRannInterval) ||
6159 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6160 cur_params.dot11MeshGateAnnouncementProtocol) ||
6161 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6162 cur_params.dot11MeshForwarding) ||
6163 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6164 cur_params.rssi_threshold) ||
6165 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6166 cur_params.ht_opmode) ||
6167 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6168 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6169 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6170 cur_params.dot11MeshHWMProotInterval) ||
6171 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6172 cur_params.dot11MeshHWMPconfirmationInterval) ||
6173 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6174 cur_params.power_mode) ||
6175 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6176 cur_params.dot11MeshAwakeWindowDuration) ||
6177 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6178 cur_params.plink_timeout))
6179 goto nla_put_failure;
6180 nla_nest_end(msg, pinfoattr);
6181 genlmsg_end(msg, hdr);
6182 return genlmsg_reply(msg, info);
6183
6184 nla_put_failure:
6185 out:
6186 nlmsg_free(msg);
6187 return -ENOBUFS;
6188}
6189
6190static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6191 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
6192 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
6193 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
6194 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
6195 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
6196 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
6197 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
6198 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
6199 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
6200 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6201 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6202 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
6203 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6204 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
6205 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
6206 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
6207 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
6208 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
6209 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
6210 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
6211 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
6212 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6213 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6214 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
6215 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
6216 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
6217 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6218 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6219};
6220
6221static const struct nla_policy
6222 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6223 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6224 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6225 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6226 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6227 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6228 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6229 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
6230 .len = IEEE80211_MAX_DATA_LEN },
6231 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6232};
6233
6234static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
6235{
6236 u8 val = nla_get_u8(nla);
6237 if (val < min || val > max)
6238 return -EINVAL;
6239 *out = val;
6240 return 0;
6241}
6242
6243static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
6244{
6245 u8 val = nla_get_u8(nla);
6246 if (val < min || val > max)
6247 return -EINVAL;
6248 *out = val;
6249 return 0;
6250}
6251
6252static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
6253{
6254 u16 val = nla_get_u16(nla);
6255 if (val < min || val > max)
6256 return -EINVAL;
6257 *out = val;
6258 return 0;
6259}
6260
6261static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
6262{
6263 u32 val = nla_get_u32(nla);
6264 if (val < min || val > max)
6265 return -EINVAL;
6266 *out = val;
6267 return 0;
6268}
6269
6270static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
6271{
6272 s32 val = nla_get_s32(nla);
6273 if (val < min || val > max)
6274 return -EINVAL;
6275 *out = val;
6276 return 0;
6277}
6278
6279static int nl80211_check_power_mode(const struct nlattr *nla,
6280 enum nl80211_mesh_power_mode min,
6281 enum nl80211_mesh_power_mode max,
6282 enum nl80211_mesh_power_mode *out)
6283{
6284 u32 val = nla_get_u32(nla);
6285 if (val < min || val > max)
6286 return -EINVAL;
6287 *out = val;
6288 return 0;
6289}
6290
6291static int nl80211_parse_mesh_config(struct genl_info *info,
6292 struct mesh_config *cfg,
6293 u32 *mask_out)
6294{
6295 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6296 u32 mask = 0;
6297 u16 ht_opmode;
6298
6299#define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
6300do { \
6301 if (tb[attr]) { \
6302 if (fn(tb[attr], min, max, &cfg->param)) \
6303 return -EINVAL; \
6304 mask |= (1 << (attr - 1)); \
6305 } \
6306} while (0)
6307
6308 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6309 return -EINVAL;
6310 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
6311 info->attrs[NL80211_ATTR_MESH_CONFIG],
6312 nl80211_meshconf_params_policy, info->extack))
6313 return -EINVAL;
6314
6315 /* This makes sure that there aren't more than 32 mesh config
6316 * parameters (otherwise our bitfield scheme would not work.) */
6317 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6318
6319 /* Fill in the params struct */
6320 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
6321 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
6322 nl80211_check_u16);
6323 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
6324 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6325 nl80211_check_u16);
6326 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
6327 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
6328 nl80211_check_u16);
6329 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
6330 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
6331 nl80211_check_u16);
6332 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
6333 mask, NL80211_MESHCONF_MAX_RETRIES,
6334 nl80211_check_u8);
6335 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
6336 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
6337 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
6338 mask, NL80211_MESHCONF_ELEMENT_TTL,
6339 nl80211_check_u8);
6340 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
6341 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6342 nl80211_check_bool);
6343 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6344 1, 255, mask,
6345 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6346 nl80211_check_u32);
6347 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
6348 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6349 nl80211_check_u8);
6350 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
6351 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
6352 nl80211_check_u32);
6353 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
6354 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6355 nl80211_check_u16);
6356 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6357 1, 65535, mask,
6358 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6359 nl80211_check_u32);
6360 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6361 1, 65535, mask,
6362 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6363 nl80211_check_u16);
6364 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6365 1, 65535, mask,
6366 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6367 nl80211_check_u16);
6368 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6369 dot11MeshHWMPnetDiameterTraversalTime,
6370 1, 65535, mask,
6371 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6372 nl80211_check_u16);
6373 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6374 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6375 nl80211_check_u8);
6376 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6377 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6378 nl80211_check_u16);
6379 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6380 dot11MeshGateAnnouncementProtocol, 0, 1,
6381 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6382 nl80211_check_bool);
6383 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6384 mask, NL80211_MESHCONF_FORWARDING,
6385 nl80211_check_bool);
6386 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6387 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6388 nl80211_check_s32);
6389 /*
6390 * Check HT operation mode based on
6391 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6392 */
6393 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6394 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6395
6396 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6397 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6398 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6399 return -EINVAL;
6400
6401 /* NON_HT_STA bit is reserved, but some programs set it */
6402 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6403
6404 cfg->ht_opmode = ht_opmode;
6405 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6406 }
6407 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6408 1, 65535, mask,
6409 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6410 nl80211_check_u32);
6411 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6412 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6413 nl80211_check_u16);
6414 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6415 dot11MeshHWMPconfirmationInterval,
6416 1, 65535, mask,
6417 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6418 nl80211_check_u16);
6419 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6420 NL80211_MESH_POWER_ACTIVE,
6421 NL80211_MESH_POWER_MAX,
6422 mask, NL80211_MESHCONF_POWER_MODE,
6423 nl80211_check_power_mode);
6424 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6425 0, 65535, mask,
6426 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6427 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6428 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6429 nl80211_check_u32);
6430 if (mask_out)
6431 *mask_out = mask;
6432
6433 return 0;
6434
6435#undef FILL_IN_MESH_PARAM_IF_SET
6436}
6437
6438static int nl80211_parse_mesh_setup(struct genl_info *info,
6439 struct mesh_setup *setup)
6440{
6441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6442 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6443
6444 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6445 return -EINVAL;
6446 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6447 info->attrs[NL80211_ATTR_MESH_SETUP],
6448 nl80211_mesh_setup_params_policy, info->extack))
6449 return -EINVAL;
6450
6451 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6452 setup->sync_method =
6453 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6454 IEEE80211_SYNC_METHOD_VENDOR :
6455 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6456
6457 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6458 setup->path_sel_proto =
6459 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6460 IEEE80211_PATH_PROTOCOL_VENDOR :
6461 IEEE80211_PATH_PROTOCOL_HWMP;
6462
6463 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6464 setup->path_metric =
6465 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6466 IEEE80211_PATH_METRIC_VENDOR :
6467 IEEE80211_PATH_METRIC_AIRTIME;
6468
6469 if (tb[NL80211_MESH_SETUP_IE]) {
6470 struct nlattr *ieattr =
6471 tb[NL80211_MESH_SETUP_IE];
6472 if (!is_valid_ie_attr(ieattr))
6473 return -EINVAL;
6474 setup->ie = nla_data(ieattr);
6475 setup->ie_len = nla_len(ieattr);
6476 }
6477 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6478 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6479 return -EINVAL;
6480 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6481 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6482 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6483 if (setup->is_secure)
6484 setup->user_mpm = true;
6485
6486 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6487 if (!setup->user_mpm)
6488 return -EINVAL;
6489 setup->auth_id =
6490 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6491 }
6492
6493 return 0;
6494}
6495
6496static int nl80211_update_mesh_config(struct sk_buff *skb,
6497 struct genl_info *info)
6498{
6499 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6500 struct net_device *dev = info->user_ptr[1];
6501 struct wireless_dev *wdev = dev->ieee80211_ptr;
6502 struct mesh_config cfg;
6503 u32 mask;
6504 int err;
6505
6506 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6507 return -EOPNOTSUPP;
6508
6509 if (!rdev->ops->update_mesh_config)
6510 return -EOPNOTSUPP;
6511
6512 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6513 if (err)
6514 return err;
6515
6516 wdev_lock(wdev);
6517 if (!wdev->mesh_id_len)
6518 err = -ENOLINK;
6519
6520 if (!err)
6521 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6522
6523 wdev_unlock(wdev);
6524
6525 return err;
6526}
6527
6528static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6529 struct sk_buff *msg)
6530{
6531 struct nlattr *nl_reg_rules;
6532 unsigned int i;
6533
6534 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6535 (regdom->dfs_region &&
6536 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6537 goto nla_put_failure;
6538
6539 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6540 if (!nl_reg_rules)
6541 goto nla_put_failure;
6542
6543 for (i = 0; i < regdom->n_reg_rules; i++) {
6544 struct nlattr *nl_reg_rule;
6545 const struct ieee80211_reg_rule *reg_rule;
6546 const struct ieee80211_freq_range *freq_range;
6547 const struct ieee80211_power_rule *power_rule;
6548 unsigned int max_bandwidth_khz;
6549
6550 reg_rule = &regdom->reg_rules[i];
6551 freq_range = &reg_rule->freq_range;
6552 power_rule = &reg_rule->power_rule;
6553
6554 nl_reg_rule = nla_nest_start(msg, i);
6555 if (!nl_reg_rule)
6556 goto nla_put_failure;
6557
6558 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6559 if (!max_bandwidth_khz)
6560 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6561 reg_rule);
6562
6563 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6564 reg_rule->flags) ||
6565 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6566 freq_range->start_freq_khz) ||
6567 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6568 freq_range->end_freq_khz) ||
6569 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6570 max_bandwidth_khz) ||
6571 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6572 power_rule->max_antenna_gain) ||
6573 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6574 power_rule->max_eirp) ||
6575 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6576 reg_rule->dfs_cac_ms))
6577 goto nla_put_failure;
6578
6579 nla_nest_end(msg, nl_reg_rule);
6580 }
6581
6582 nla_nest_end(msg, nl_reg_rules);
6583 return 0;
6584
6585nla_put_failure:
6586 return -EMSGSIZE;
6587}
6588
6589static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6590{
6591 const struct ieee80211_regdomain *regdom = NULL;
6592 struct cfg80211_registered_device *rdev;
6593 struct wiphy *wiphy = NULL;
6594 struct sk_buff *msg;
6595 void *hdr;
6596
6597 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6598 if (!msg)
6599 return -ENOBUFS;
6600
6601 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6602 NL80211_CMD_GET_REG);
6603 if (!hdr)
6604 goto put_failure;
6605
6606 if (info->attrs[NL80211_ATTR_WIPHY]) {
6607 bool self_managed;
6608
6609 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6610 if (IS_ERR(rdev)) {
6611 nlmsg_free(msg);
6612 return PTR_ERR(rdev);
6613 }
6614
6615 wiphy = &rdev->wiphy;
6616 self_managed = wiphy->regulatory_flags &
6617 REGULATORY_WIPHY_SELF_MANAGED;
6618 regdom = get_wiphy_regdom(wiphy);
6619
6620 /* a self-managed-reg device must have a private regdom */
6621 if (WARN_ON(!regdom && self_managed)) {
6622 nlmsg_free(msg);
6623 return -EINVAL;
6624 }
6625
6626 if (regdom &&
6627 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6628 goto nla_put_failure;
6629 }
6630
6631 if (!wiphy && reg_last_request_cell_base() &&
6632 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6633 NL80211_USER_REG_HINT_CELL_BASE))
6634 goto nla_put_failure;
6635
6636 rcu_read_lock();
6637
6638 if (!regdom)
6639 regdom = rcu_dereference(cfg80211_regdomain);
6640
6641 if (nl80211_put_regdom(regdom, msg))
6642 goto nla_put_failure_rcu;
6643
6644 rcu_read_unlock();
6645
6646 genlmsg_end(msg, hdr);
6647 return genlmsg_reply(msg, info);
6648
6649nla_put_failure_rcu:
6650 rcu_read_unlock();
6651nla_put_failure:
6652put_failure:
6653 nlmsg_free(msg);
6654 return -EMSGSIZE;
6655}
6656
6657static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6658 u32 seq, int flags, struct wiphy *wiphy,
6659 const struct ieee80211_regdomain *regdom)
6660{
6661 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6662 NL80211_CMD_GET_REG);
6663
6664 if (!hdr)
6665 return -1;
6666
6667 genl_dump_check_consistent(cb, hdr);
6668
6669 if (nl80211_put_regdom(regdom, msg))
6670 goto nla_put_failure;
6671
6672 if (!wiphy && reg_last_request_cell_base() &&
6673 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6674 NL80211_USER_REG_HINT_CELL_BASE))
6675 goto nla_put_failure;
6676
6677 if (wiphy &&
6678 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6679 goto nla_put_failure;
6680
6681 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6682 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6683 goto nla_put_failure;
6684
6685 genlmsg_end(msg, hdr);
6686 return 0;
6687
6688nla_put_failure:
6689 genlmsg_cancel(msg, hdr);
6690 return -EMSGSIZE;
6691}
6692
6693static int nl80211_get_reg_dump(struct sk_buff *skb,
6694 struct netlink_callback *cb)
6695{
6696 const struct ieee80211_regdomain *regdom = NULL;
6697 struct cfg80211_registered_device *rdev;
6698 int err, reg_idx, start = cb->args[2];
6699
6700 rtnl_lock();
6701
6702 if (cfg80211_regdomain && start == 0) {
6703 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6704 NLM_F_MULTI, NULL,
6705 rtnl_dereference(cfg80211_regdomain));
6706 if (err < 0)
6707 goto out_err;
6708 }
6709
6710 /* the global regdom is idx 0 */
6711 reg_idx = 1;
6712 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6713 regdom = get_wiphy_regdom(&rdev->wiphy);
6714 if (!regdom)
6715 continue;
6716
6717 if (++reg_idx <= start)
6718 continue;
6719
6720 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6721 NLM_F_MULTI, &rdev->wiphy, regdom);
6722 if (err < 0) {
6723 reg_idx--;
6724 break;
6725 }
6726 }
6727
6728 cb->args[2] = reg_idx;
6729 err = skb->len;
6730out_err:
6731 rtnl_unlock();
6732 return err;
6733}
6734
6735#ifdef CONFIG_CFG80211_CRDA_SUPPORT
6736static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6737 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6738 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6739 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6740 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6741 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6742 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6743 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6744};
6745
6746static int parse_reg_rule(struct nlattr *tb[],
6747 struct ieee80211_reg_rule *reg_rule)
6748{
6749 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6750 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6751
6752 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6753 return -EINVAL;
6754 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6755 return -EINVAL;
6756 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6757 return -EINVAL;
6758 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6759 return -EINVAL;
6760 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6761 return -EINVAL;
6762
6763 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6764
6765 freq_range->start_freq_khz =
6766 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6767 freq_range->end_freq_khz =
6768 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6769 freq_range->max_bandwidth_khz =
6770 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6771
6772 power_rule->max_eirp =
6773 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6774
6775 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6776 power_rule->max_antenna_gain =
6777 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6778
6779 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6780 reg_rule->dfs_cac_ms =
6781 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6782
6783 return 0;
6784}
6785
6786static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6787{
6788 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6789 struct nlattr *nl_reg_rule;
6790 char *alpha2;
6791 int rem_reg_rules, r;
6792 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6793 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6794 struct ieee80211_regdomain *rd;
6795
6796 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6797 return -EINVAL;
6798
6799 if (!info->attrs[NL80211_ATTR_REG_RULES])
6800 return -EINVAL;
6801
6802 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6803
6804 if (info->attrs[NL80211_ATTR_DFS_REGION])
6805 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6806
6807 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6808 rem_reg_rules) {
6809 num_rules++;
6810 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6811 return -EINVAL;
6812 }
6813
6814 if (!reg_is_valid_request(alpha2))
6815 return -EINVAL;
6816
6817 size_of_regd = sizeof(struct ieee80211_regdomain) +
6818 num_rules * sizeof(struct ieee80211_reg_rule);
6819
6820 rd = kzalloc(size_of_regd, GFP_KERNEL);
6821 if (!rd)
6822 return -ENOMEM;
6823
6824 rd->n_reg_rules = num_rules;
6825 rd->alpha2[0] = alpha2[0];
6826 rd->alpha2[1] = alpha2[1];
6827
6828 /*
6829 * Disable DFS master mode if the DFS region was
6830 * not supported or known on this kernel.
6831 */
6832 if (reg_supported_dfs_region(dfs_region))
6833 rd->dfs_region = dfs_region;
6834
6835 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6836 rem_reg_rules) {
6837 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6838 nl_reg_rule, reg_rule_policy,
6839 info->extack);
6840 if (r)
6841 goto bad_reg;
6842 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6843 if (r)
6844 goto bad_reg;
6845
6846 rule_idx++;
6847
6848 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6849 r = -EINVAL;
6850 goto bad_reg;
6851 }
6852 }
6853
6854 /* set_regdom takes ownership of rd */
6855 return set_regdom(rd, REGD_SOURCE_CRDA);
6856 bad_reg:
6857 kfree(rd);
6858 return r;
6859}
6860#endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6861
6862static int validate_scan_freqs(struct nlattr *freqs)
6863{
6864 struct nlattr *attr1, *attr2;
6865 int n_channels = 0, tmp1, tmp2;
6866
6867 nla_for_each_nested(attr1, freqs, tmp1)
6868 if (nla_len(attr1) != sizeof(u32))
6869 return 0;
6870
6871 nla_for_each_nested(attr1, freqs, tmp1) {
6872 n_channels++;
6873 /*
6874 * Some hardware has a limited channel list for
6875 * scanning, and it is pretty much nonsensical
6876 * to scan for a channel twice, so disallow that
6877 * and don't require drivers to check that the
6878 * channel list they get isn't longer than what
6879 * they can scan, as long as they can scan all
6880 * the channels they registered at once.
6881 */
6882 nla_for_each_nested(attr2, freqs, tmp2)
6883 if (attr1 != attr2 &&
6884 nla_get_u32(attr1) == nla_get_u32(attr2))
6885 return 0;
6886 }
6887
6888 return n_channels;
6889}
6890
6891static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6892{
6893 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6894}
6895
6896static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6897 struct cfg80211_bss_selection *bss_select)
6898{
6899 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6900 struct nlattr *nest;
6901 int err;
6902 bool found = false;
6903 int i;
6904
6905 /* only process one nested attribute */
6906 nest = nla_data(nla);
6907 if (!nla_ok(nest, nla_len(nest)))
6908 return -EINVAL;
6909
6910 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6911 nl80211_bss_select_policy, NULL);
6912 if (err)
6913 return err;
6914
6915 /* only one attribute may be given */
6916 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6917 if (attr[i]) {
6918 if (found)
6919 return -EINVAL;
6920 found = true;
6921 }
6922 }
6923
6924 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6925
6926 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6927 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6928
6929 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6930 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6931 bss_select->param.band_pref =
6932 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6933 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6934 return -EINVAL;
6935 }
6936
6937 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6938 struct nl80211_bss_select_rssi_adjust *adj_param;
6939
6940 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6941 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6942 bss_select->param.adjust.band = adj_param->band;
6943 bss_select->param.adjust.delta = adj_param->delta;
6944 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6945 return -EINVAL;
6946 }
6947
6948 /* user-space did not provide behaviour attribute */
6949 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6950 return -EINVAL;
6951
6952 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6953 return -EINVAL;
6954
6955 return 0;
6956}
6957
6958static int nl80211_parse_random_mac(struct nlattr **attrs,
6959 u8 *mac_addr, u8 *mac_addr_mask)
6960{
6961 int i;
6962
6963 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6964 eth_zero_addr(mac_addr);
6965 eth_zero_addr(mac_addr_mask);
6966 mac_addr[0] = 0x2;
6967 mac_addr_mask[0] = 0x3;
6968
6969 return 0;
6970 }
6971
6972 /* need both or none */
6973 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6974 return -EINVAL;
6975
6976 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6977 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6978
6979 /* don't allow or configure an mcast address */
6980 if (!is_multicast_ether_addr(mac_addr_mask) ||
6981 is_multicast_ether_addr(mac_addr))
6982 return -EINVAL;
6983
6984 /*
6985 * allow users to pass a MAC address that has bits set outside
6986 * of the mask, but don't bother drivers with having to deal
6987 * with such bits
6988 */
6989 for (i = 0; i < ETH_ALEN; i++)
6990 mac_addr[i] &= mac_addr_mask[i];
6991
6992 return 0;
6993}
6994
6995static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6996{
6997 ASSERT_WDEV_LOCK(wdev);
6998
6999 if (!cfg80211_beaconing_iface_active(wdev))
7000 return true;
7001
7002 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7003 return true;
7004
7005 return regulatory_pre_cac_allowed(wdev->wiphy);
7006}
7007
7008static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7009 enum nl80211_ext_feature_index feat)
7010{
7011 if (!(flags & flag))
7012 return true;
7013 if (wiphy_ext_feature_isset(wiphy, feat))
7014 return true;
7015 return false;
7016}
7017
7018static int
7019nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7020 void *request, struct nlattr **attrs,
7021 bool is_sched_scan)
7022{
7023 u8 *mac_addr, *mac_addr_mask;
7024 u32 *flags;
7025 enum nl80211_feature_flags randomness_flag;
7026
7027 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7028 return 0;
7029
7030 if (is_sched_scan) {
7031 struct cfg80211_sched_scan_request *req = request;
7032
7033 randomness_flag = wdev ?
7034 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7035 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7036 flags = &req->flags;
7037 mac_addr = req->mac_addr;
7038 mac_addr_mask = req->mac_addr_mask;
7039 } else {
7040 struct cfg80211_scan_request *req = request;
7041
7042 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7043 flags = &req->flags;
7044 mac_addr = req->mac_addr;
7045 mac_addr_mask = req->mac_addr_mask;
7046 }
7047
7048 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7049
7050 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7051 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7052 !nl80211_check_scan_feat(wiphy, *flags,
7053 NL80211_SCAN_FLAG_LOW_SPAN,
7054 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7055 !nl80211_check_scan_feat(wiphy, *flags,
7056 NL80211_SCAN_FLAG_LOW_POWER,
7057 NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7058 !nl80211_check_scan_feat(wiphy, *flags,
7059 NL80211_SCAN_FLAG_HIGH_ACCURACY,
7060 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7061 !nl80211_check_scan_feat(wiphy, *flags,
7062 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7063 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7064 !nl80211_check_scan_feat(wiphy, *flags,
7065 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7066 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7067 !nl80211_check_scan_feat(wiphy, *flags,
7068 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7069 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7070 !nl80211_check_scan_feat(wiphy, *flags,
7071 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7072 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7073 !nl80211_check_scan_feat(wiphy, *flags,
7074 NL80211_SCAN_FLAG_RANDOM_SN,
7075 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7076 !nl80211_check_scan_feat(wiphy, *flags,
7077 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7078 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7079 return -EOPNOTSUPP;
7080
7081 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7082 int err;
7083
7084 if (!(wiphy->features & randomness_flag) ||
7085 (wdev && wdev->current_bss))
7086 return -EOPNOTSUPP;
7087
7088 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7089 if (err)
7090 return err;
7091 }
7092
7093 return 0;
7094}
7095
7096static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7097{
7098 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7099 struct wireless_dev *wdev = info->user_ptr[1];
7100 struct cfg80211_scan_request *request;
7101 struct nlattr *attr;
7102 struct wiphy *wiphy;
7103 int err, tmp, n_ssids = 0, n_channels, i;
7104 size_t ie_len;
7105
7106 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7107 return -EINVAL;
7108
7109 wiphy = &rdev->wiphy;
7110
7111 if (wdev->iftype == NL80211_IFTYPE_NAN)
7112 return -EOPNOTSUPP;
7113
7114 if (!rdev->ops->scan)
7115 return -EOPNOTSUPP;
7116
7117 if (rdev->scan_req || rdev->scan_msg) {
7118 err = -EBUSY;
7119 goto unlock;
7120 }
7121
7122 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7123 n_channels = validate_scan_freqs(
7124 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7125 if (!n_channels) {
7126 err = -EINVAL;
7127 goto unlock;
7128 }
7129 } else {
7130 n_channels = ieee80211_get_num_supported_channels(wiphy);
7131 }
7132
7133 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7134 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7135 n_ssids++;
7136
7137 if (n_ssids > wiphy->max_scan_ssids) {
7138 err = -EINVAL;
7139 goto unlock;
7140 }
7141
7142 if (info->attrs[NL80211_ATTR_IE])
7143 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7144 else
7145 ie_len = 0;
7146
7147 if (ie_len > wiphy->max_scan_ie_len) {
7148 err = -EINVAL;
7149 goto unlock;
7150 }
7151
7152 request = kzalloc(sizeof(*request)
7153 + sizeof(*request->ssids) * n_ssids
7154 + sizeof(*request->channels) * n_channels
7155 + ie_len, GFP_KERNEL);
7156 if (!request) {
7157 err = -ENOMEM;
7158 goto unlock;
7159 }
7160
7161 if (n_ssids)
7162 request->ssids = (void *)&request->channels[n_channels];
7163 request->n_ssids = n_ssids;
7164 if (ie_len) {
7165 if (n_ssids)
7166 request->ie = (void *)(request->ssids + n_ssids);
7167 else
7168 request->ie = (void *)(request->channels + n_channels);
7169 }
7170
7171 i = 0;
7172 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7173 /* user specified, bail out if channel not found */
7174 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7175 struct ieee80211_channel *chan;
7176
7177 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7178
7179 if (!chan) {
7180 err = -EINVAL;
7181 goto out_free;
7182 }
7183
7184 /* ignore disabled channels */
7185 if (chan->flags & IEEE80211_CHAN_DISABLED)
7186 continue;
7187
7188 request->channels[i] = chan;
7189 i++;
7190 }
7191 } else {
7192 enum nl80211_band band;
7193
7194 /* all channels */
7195 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7196 int j;
7197
7198 if (!wiphy->bands[band])
7199 continue;
7200 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7201 struct ieee80211_channel *chan;
7202
7203 chan = &wiphy->bands[band]->channels[j];
7204
7205 if (chan->flags & IEEE80211_CHAN_DISABLED)
7206 continue;
7207
7208 request->channels[i] = chan;
7209 i++;
7210 }
7211 }
7212 }
7213
7214 if (!i) {
7215 err = -EINVAL;
7216 goto out_free;
7217 }
7218
7219 request->n_channels = i;
7220
7221 wdev_lock(wdev);
7222 if (!cfg80211_off_channel_oper_allowed(wdev)) {
7223 struct ieee80211_channel *chan;
7224
7225 if (request->n_channels != 1) {
7226 wdev_unlock(wdev);
7227 err = -EBUSY;
7228 goto out_free;
7229 }
7230
7231 chan = request->channels[0];
7232 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7233 wdev_unlock(wdev);
7234 err = -EBUSY;
7235 goto out_free;
7236 }
7237 }
7238 wdev_unlock(wdev);
7239
7240 i = 0;
7241 if (n_ssids) {
7242 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7243 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7244 err = -EINVAL;
7245 goto out_free;
7246 }
7247 request->ssids[i].ssid_len = nla_len(attr);
7248 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7249 i++;
7250 }
7251 }
7252
7253 if (info->attrs[NL80211_ATTR_IE]) {
7254 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7255 memcpy((void *)request->ie,
7256 nla_data(info->attrs[NL80211_ATTR_IE]),
7257 request->ie_len);
7258 }
7259
7260 for (i = 0; i < NUM_NL80211_BANDS; i++)
7261 if (wiphy->bands[i])
7262 request->rates[i] =
7263 (1 << wiphy->bands[i]->n_bitrates) - 1;
7264
7265 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7266 nla_for_each_nested(attr,
7267 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7268 tmp) {
7269 enum nl80211_band band = nla_type(attr);
7270
7271 if (band < 0 || band >= NUM_NL80211_BANDS) {
7272 err = -EINVAL;
7273 goto out_free;
7274 }
7275
7276 if (!wiphy->bands[band])
7277 continue;
7278
7279 err = ieee80211_get_ratemask(wiphy->bands[band],
7280 nla_data(attr),
7281 nla_len(attr),
7282 &request->rates[band]);
7283 if (err)
7284 goto out_free;
7285 }
7286 }
7287
7288 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7289 if (!wiphy_ext_feature_isset(wiphy,
7290 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7291 err = -EOPNOTSUPP;
7292 goto out_free;
7293 }
7294
7295 request->duration =
7296 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7297 request->duration_mandatory =
7298 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7299 }
7300
7301 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7302 false);
7303 if (err)
7304 goto out_free;
7305
7306 request->no_cck =
7307 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7308
7309 /* Initial implementation used NL80211_ATTR_MAC to set the specific
7310 * BSSID to scan for. This was problematic because that same attribute
7311 * was already used for another purpose (local random MAC address). The
7312 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7313 * compatibility with older userspace components, also use the
7314 * NL80211_ATTR_MAC value here if it can be determined to be used for
7315 * the specific BSSID use case instead of the random MAC address
7316 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7317 */
7318 if (info->attrs[NL80211_ATTR_BSSID])
7319 memcpy(request->bssid,
7320 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7321 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7322 info->attrs[NL80211_ATTR_MAC])
7323 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7324 ETH_ALEN);
7325 else
7326 eth_broadcast_addr(request->bssid);
7327
7328 request->wdev = wdev;
7329 request->wiphy = &rdev->wiphy;
7330 request->scan_start = jiffies;
7331
7332 rdev->scan_req = request;
7333 err = rdev_scan(rdev, request);
7334
7335 if (!err) {
7336 nl80211_send_scan_start(rdev, wdev);
7337 if (wdev->netdev)
7338 dev_hold(wdev->netdev);
7339 } else {
7340 out_free:
7341 rdev->scan_req = NULL;
7342 kfree(request);
7343 }
7344
7345 unlock:
7346 return err;
7347}
7348
7349static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7350{
7351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7352 struct wireless_dev *wdev = info->user_ptr[1];
7353
7354 if (!rdev->ops->abort_scan)
7355 return -EOPNOTSUPP;
7356
7357 if (rdev->scan_msg)
7358 return 0;
7359
7360 if (!rdev->scan_req)
7361 return -ENOENT;
7362
7363 rdev_abort_scan(rdev, wdev);
7364 return 0;
7365}
7366
7367static int
7368nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7369 struct cfg80211_sched_scan_request *request,
7370 struct nlattr **attrs)
7371{
7372 int tmp, err, i = 0;
7373 struct nlattr *attr;
7374
7375 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7376 u32 interval;
7377
7378 /*
7379 * If scan plans are not specified,
7380 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7381 * case one scan plan will be set with the specified scan
7382 * interval and infinite number of iterations.
7383 */
7384 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7385 if (!interval)
7386 return -EINVAL;
7387
7388 request->scan_plans[0].interval =
7389 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7390 if (!request->scan_plans[0].interval)
7391 return -EINVAL;
7392
7393 if (request->scan_plans[0].interval >
7394 wiphy->max_sched_scan_plan_interval)
7395 request->scan_plans[0].interval =
7396 wiphy->max_sched_scan_plan_interval;
7397
7398 return 0;
7399 }
7400
7401 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7402 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7403
7404 if (WARN_ON(i >= n_plans))
7405 return -EINVAL;
7406
7407 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7408 attr, nl80211_plan_policy, NULL);
7409 if (err)
7410 return err;
7411
7412 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7413 return -EINVAL;
7414
7415 request->scan_plans[i].interval =
7416 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7417 if (!request->scan_plans[i].interval ||
7418 request->scan_plans[i].interval >
7419 wiphy->max_sched_scan_plan_interval)
7420 return -EINVAL;
7421
7422 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7423 request->scan_plans[i].iterations =
7424 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7425 if (!request->scan_plans[i].iterations ||
7426 (request->scan_plans[i].iterations >
7427 wiphy->max_sched_scan_plan_iterations))
7428 return -EINVAL;
7429 } else if (i < n_plans - 1) {
7430 /*
7431 * All scan plans but the last one must specify
7432 * a finite number of iterations
7433 */
7434 return -EINVAL;
7435 }
7436
7437 i++;
7438 }
7439
7440 /*
7441 * The last scan plan must not specify the number of
7442 * iterations, it is supposed to run infinitely
7443 */
7444 if (request->scan_plans[n_plans - 1].iterations)
7445 return -EINVAL;
7446
7447 return 0;
7448}
7449
7450static struct cfg80211_sched_scan_request *
7451nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7452 struct nlattr **attrs, int max_match_sets)
7453{
7454 struct cfg80211_sched_scan_request *request;
7455 struct nlattr *attr;
7456 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7457 enum nl80211_band band;
7458 size_t ie_len;
7459 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7460 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7461
7462 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7463 return ERR_PTR(-EINVAL);
7464
7465 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7466 n_channels = validate_scan_freqs(
7467 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7468 if (!n_channels)
7469 return ERR_PTR(-EINVAL);
7470 } else {
7471 n_channels = ieee80211_get_num_supported_channels(wiphy);
7472 }
7473
7474 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7475 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7476 tmp)
7477 n_ssids++;
7478
7479 if (n_ssids > wiphy->max_sched_scan_ssids)
7480 return ERR_PTR(-EINVAL);
7481
7482 /*
7483 * First, count the number of 'real' matchsets. Due to an issue with
7484 * the old implementation, matchsets containing only the RSSI attribute
7485 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7486 * RSSI for all matchsets, rather than their own matchset for reporting
7487 * all APs with a strong RSSI. This is needed to be compatible with
7488 * older userspace that treated a matchset with only the RSSI as the
7489 * global RSSI for all other matchsets - if there are other matchsets.
7490 */
7491 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7492 nla_for_each_nested(attr,
7493 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7494 tmp) {
7495 struct nlattr *rssi;
7496
7497 err = nla_parse_nested(tb,
7498 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7499 attr, nl80211_match_policy,
7500 NULL);
7501 if (err)
7502 return ERR_PTR(err);
7503
7504 /* SSID and BSSID are mutually exclusive */
7505 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7506 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7507 return ERR_PTR(-EINVAL);
7508
7509 /* add other standalone attributes here */
7510 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7511 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7512 n_match_sets++;
7513 continue;
7514 }
7515 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7516 if (rssi)
7517 default_match_rssi = nla_get_s32(rssi);
7518 }
7519 }
7520
7521 /* However, if there's no other matchset, add the RSSI one */
7522 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7523 n_match_sets = 1;
7524
7525 if (n_match_sets > max_match_sets)
7526 return ERR_PTR(-EINVAL);
7527
7528 if (attrs[NL80211_ATTR_IE])
7529 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7530 else
7531 ie_len = 0;
7532
7533 if (ie_len > wiphy->max_sched_scan_ie_len)
7534 return ERR_PTR(-EINVAL);
7535
7536 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7537 /*
7538 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7539 * each scan plan already specifies its own interval
7540 */
7541 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7542 return ERR_PTR(-EINVAL);
7543
7544 nla_for_each_nested(attr,
7545 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7546 n_plans++;
7547 } else {
7548 /*
7549 * The scan interval attribute is kept for backward
7550 * compatibility. If no scan plans are specified and sched scan
7551 * interval is specified, one scan plan will be set with this
7552 * scan interval and infinite number of iterations.
7553 */
7554 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7555 return ERR_PTR(-EINVAL);
7556
7557 n_plans = 1;
7558 }
7559
7560 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7561 return ERR_PTR(-EINVAL);
7562
7563 if (!wiphy_ext_feature_isset(
7564 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7565 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7566 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7567 return ERR_PTR(-EINVAL);
7568
7569 request = kzalloc(sizeof(*request)
7570 + sizeof(*request->ssids) * n_ssids
7571 + sizeof(*request->match_sets) * n_match_sets
7572 + sizeof(*request->scan_plans) * n_plans
7573 + sizeof(*request->channels) * n_channels
7574 + ie_len, GFP_KERNEL);
7575 if (!request)
7576 return ERR_PTR(-ENOMEM);
7577
7578 if (n_ssids)
7579 request->ssids = (void *)&request->channels[n_channels];
7580 request->n_ssids = n_ssids;
7581 if (ie_len) {
7582 if (n_ssids)
7583 request->ie = (void *)(request->ssids + n_ssids);
7584 else
7585 request->ie = (void *)(request->channels + n_channels);
7586 }
7587
7588 if (n_match_sets) {
7589 if (request->ie)
7590 request->match_sets = (void *)(request->ie + ie_len);
7591 else if (n_ssids)
7592 request->match_sets =
7593 (void *)(request->ssids + n_ssids);
7594 else
7595 request->match_sets =
7596 (void *)(request->channels + n_channels);
7597 }
7598 request->n_match_sets = n_match_sets;
7599
7600 if (n_match_sets)
7601 request->scan_plans = (void *)(request->match_sets +
7602 n_match_sets);
7603 else if (request->ie)
7604 request->scan_plans = (void *)(request->ie + ie_len);
7605 else if (n_ssids)
7606 request->scan_plans = (void *)(request->ssids + n_ssids);
7607 else
7608 request->scan_plans = (void *)(request->channels + n_channels);
7609
7610 request->n_scan_plans = n_plans;
7611
7612 i = 0;
7613 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7614 /* user specified, bail out if channel not found */
7615 nla_for_each_nested(attr,
7616 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7617 tmp) {
7618 struct ieee80211_channel *chan;
7619
7620 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7621
7622 if (!chan) {
7623 err = -EINVAL;
7624 goto out_free;
7625 }
7626
7627 /* ignore disabled channels */
7628 if (chan->flags & IEEE80211_CHAN_DISABLED)
7629 continue;
7630
7631 request->channels[i] = chan;
7632 i++;
7633 }
7634 } else {
7635 /* all channels */
7636 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7637 int j;
7638
7639 if (!wiphy->bands[band])
7640 continue;
7641 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7642 struct ieee80211_channel *chan;
7643
7644 chan = &wiphy->bands[band]->channels[j];
7645
7646 if (chan->flags & IEEE80211_CHAN_DISABLED)
7647 continue;
7648
7649 request->channels[i] = chan;
7650 i++;
7651 }
7652 }
7653 }
7654
7655 if (!i) {
7656 err = -EINVAL;
7657 goto out_free;
7658 }
7659
7660 request->n_channels = i;
7661
7662 i = 0;
7663 if (n_ssids) {
7664 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7665 tmp) {
7666 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7667 err = -EINVAL;
7668 goto out_free;
7669 }
7670 request->ssids[i].ssid_len = nla_len(attr);
7671 memcpy(request->ssids[i].ssid, nla_data(attr),
7672 nla_len(attr));
7673 i++;
7674 }
7675 }
7676
7677 i = 0;
7678 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7679 nla_for_each_nested(attr,
7680 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7681 tmp) {
7682 struct nlattr *ssid, *bssid, *rssi;
7683
7684 err = nla_parse_nested(tb,
7685 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7686 attr, nl80211_match_policy,
7687 NULL);
7688 if (err)
7689 goto out_free;
7690 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7691 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7692 if (ssid || bssid) {
7693 if (WARN_ON(i >= n_match_sets)) {
7694 /* this indicates a programming error,
7695 * the loop above should have verified
7696 * things properly
7697 */
7698 err = -EINVAL;
7699 goto out_free;
7700 }
7701
7702 if (ssid) {
7703 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7704 err = -EINVAL;
7705 goto out_free;
7706 }
7707 memcpy(request->match_sets[i].ssid.ssid,
7708 nla_data(ssid), nla_len(ssid));
7709 request->match_sets[i].ssid.ssid_len =
7710 nla_len(ssid);
7711 }
7712 if (bssid) {
7713 if (nla_len(bssid) != ETH_ALEN) {
7714 err = -EINVAL;
7715 goto out_free;
7716 }
7717 memcpy(request->match_sets[i].bssid,
7718 nla_data(bssid), ETH_ALEN);
7719 }
7720
7721 /* special attribute - old implementation w/a */
7722 request->match_sets[i].rssi_thold =
7723 default_match_rssi;
7724 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7725 if (rssi)
7726 request->match_sets[i].rssi_thold =
7727 nla_get_s32(rssi);
7728 }
7729 i++;
7730 }
7731
7732 /* there was no other matchset, so the RSSI one is alone */
7733 if (i == 0 && n_match_sets)
7734 request->match_sets[0].rssi_thold = default_match_rssi;
7735
7736 request->min_rssi_thold = INT_MAX;
7737 for (i = 0; i < n_match_sets; i++)
7738 request->min_rssi_thold =
7739 min(request->match_sets[i].rssi_thold,
7740 request->min_rssi_thold);
7741 } else {
7742 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7743 }
7744
7745 if (ie_len) {
7746 request->ie_len = ie_len;
7747 memcpy((void *)request->ie,
7748 nla_data(attrs[NL80211_ATTR_IE]),
7749 request->ie_len);
7750 }
7751
7752 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7753 if (err)
7754 goto out_free;
7755
7756 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7757 request->delay =
7758 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7759
7760 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7761 request->relative_rssi = nla_get_s8(
7762 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7763 request->relative_rssi_set = true;
7764 }
7765
7766 if (request->relative_rssi_set &&
7767 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7768 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7769
7770 rssi_adjust = nla_data(
7771 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7772 request->rssi_adjust.band = rssi_adjust->band;
7773 request->rssi_adjust.delta = rssi_adjust->delta;
7774 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7775 err = -EINVAL;
7776 goto out_free;
7777 }
7778 }
7779
7780 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7781 if (err)
7782 goto out_free;
7783
7784 request->scan_start = jiffies;
7785
7786 return request;
7787
7788out_free:
7789 kfree(request);
7790 return ERR_PTR(err);
7791}
7792
7793static int nl80211_start_sched_scan(struct sk_buff *skb,
7794 struct genl_info *info)
7795{
7796 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7797 struct net_device *dev = info->user_ptr[1];
7798 struct wireless_dev *wdev = dev->ieee80211_ptr;
7799 struct cfg80211_sched_scan_request *sched_scan_req;
7800 bool want_multi;
7801 int err;
7802
7803 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7804 return -EOPNOTSUPP;
7805
7806 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7807 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7808 if (err)
7809 return err;
7810
7811 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7812 info->attrs,
7813 rdev->wiphy.max_match_sets);
7814
7815 err = PTR_ERR_OR_ZERO(sched_scan_req);
7816 if (err)
7817 goto out_err;
7818
7819 /* leave request id zero for legacy request
7820 * or if driver does not support multi-scheduled scan
7821 */
7822 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7823 while (!sched_scan_req->reqid)
7824 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7825 }
7826
7827 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7828 if (err)
7829 goto out_free;
7830
7831 sched_scan_req->dev = dev;
7832 sched_scan_req->wiphy = &rdev->wiphy;
7833
7834 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7835 sched_scan_req->owner_nlportid = info->snd_portid;
7836
7837 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7838
7839 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7840 return 0;
7841
7842out_free:
7843 kfree(sched_scan_req);
7844out_err:
7845 return err;
7846}
7847
7848static int nl80211_stop_sched_scan(struct sk_buff *skb,
7849 struct genl_info *info)
7850{
7851 struct cfg80211_sched_scan_request *req;
7852 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7853 u64 cookie;
7854
7855 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7856 return -EOPNOTSUPP;
7857
7858 if (info->attrs[NL80211_ATTR_COOKIE]) {
7859 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7860 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7861 }
7862
7863 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7864 struct cfg80211_sched_scan_request,
7865 list);
7866 if (!req || req->reqid ||
7867 (req->owner_nlportid &&
7868 req->owner_nlportid != info->snd_portid))
7869 return -ENOENT;
7870
7871 return cfg80211_stop_sched_scan_req(rdev, req, false);
7872}
7873
7874static int nl80211_start_radar_detection(struct sk_buff *skb,
7875 struct genl_info *info)
7876{
7877 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7878 struct net_device *dev = info->user_ptr[1];
7879 struct wireless_dev *wdev = dev->ieee80211_ptr;
7880 struct wiphy *wiphy = wdev->wiphy;
7881 struct cfg80211_chan_def chandef;
7882 enum nl80211_dfs_regions dfs_region;
7883 unsigned int cac_time_ms;
7884 int err;
7885
7886 dfs_region = reg_get_dfs_region(wiphy);
7887 if (dfs_region == NL80211_DFS_UNSET)
7888 return -EINVAL;
7889
7890 err = nl80211_parse_chandef(rdev, info, &chandef);
7891 if (err)
7892 return err;
7893
7894 if (netif_carrier_ok(dev))
7895 return -EBUSY;
7896
7897 if (wdev->cac_started)
7898 return -EBUSY;
7899
7900 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
7901 if (err < 0)
7902 return err;
7903
7904 if (err == 0)
7905 return -EINVAL;
7906
7907 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
7908 return -EINVAL;
7909
7910 /* CAC start is offloaded to HW and can't be started manually */
7911 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
7912 return -EOPNOTSUPP;
7913
7914 if (!rdev->ops->start_radar_detection)
7915 return -EOPNOTSUPP;
7916
7917 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7918 if (WARN_ON(!cac_time_ms))
7919 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7920
7921 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7922 if (!err) {
7923 wdev->chandef = chandef;
7924 wdev->cac_started = true;
7925 wdev->cac_start_time = jiffies;
7926 wdev->cac_time_ms = cac_time_ms;
7927 }
7928 return err;
7929}
7930
7931static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7932{
7933 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7934 struct net_device *dev = info->user_ptr[1];
7935 struct wireless_dev *wdev = dev->ieee80211_ptr;
7936 struct cfg80211_csa_settings params;
7937 /* csa_attrs is defined static to avoid waste of stack size - this
7938 * function is called under RTNL lock, so this should not be a problem.
7939 */
7940 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7941 int err;
7942 bool need_new_beacon = false;
7943 bool need_handle_dfs_flag = true;
7944 int len, i;
7945 u32 cs_count;
7946
7947 if (!rdev->ops->channel_switch ||
7948 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7949 return -EOPNOTSUPP;
7950
7951 switch (dev->ieee80211_ptr->iftype) {
7952 case NL80211_IFTYPE_AP:
7953 case NL80211_IFTYPE_P2P_GO:
7954 need_new_beacon = true;
7955 /* For all modes except AP the handle_dfs flag needs to be
7956 * supplied to tell the kernel that userspace will handle radar
7957 * events when they happen. Otherwise a switch to a channel
7958 * requiring DFS will be rejected.
7959 */
7960 need_handle_dfs_flag = false;
7961
7962 /* useless if AP is not running */
7963 if (!wdev->beacon_interval)
7964 return -ENOTCONN;
7965 break;
7966 case NL80211_IFTYPE_ADHOC:
7967 if (!wdev->ssid_len)
7968 return -ENOTCONN;
7969 break;
7970 case NL80211_IFTYPE_MESH_POINT:
7971 if (!wdev->mesh_id_len)
7972 return -ENOTCONN;
7973 break;
7974 default:
7975 return -EOPNOTSUPP;
7976 }
7977
7978 memset(&params, 0, sizeof(params));
7979
7980 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7981 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7982 return -EINVAL;
7983
7984 /* only important for AP, IBSS and mesh create IEs internally */
7985 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7986 return -EINVAL;
7987
7988 /* Even though the attribute is u32, the specification says
7989 * u8, so let's make sure we don't overflow.
7990 */
7991 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7992 if (cs_count > 255)
7993 return -EINVAL;
7994
7995 params.count = cs_count;
7996
7997 if (!need_new_beacon)
7998 goto skip_beacons;
7999
8000 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
8001 if (err)
8002 return err;
8003
8004 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
8005 info->attrs[NL80211_ATTR_CSA_IES],
8006 nl80211_policy, info->extack);
8007 if (err)
8008 return err;
8009
8010 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
8011 if (err)
8012 return err;
8013
8014 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8015 return -EINVAL;
8016
8017 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8018 if (!len || (len % sizeof(u16)))
8019 return -EINVAL;
8020
8021 params.n_counter_offsets_beacon = len / sizeof(u16);
8022 if (rdev->wiphy.max_num_csa_counters &&
8023 (params.n_counter_offsets_beacon >
8024 rdev->wiphy.max_num_csa_counters))
8025 return -EINVAL;
8026
8027 params.counter_offsets_beacon =
8028 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8029
8030 /* sanity checks - counters should fit and be the same */
8031 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8032 u16 offset = params.counter_offsets_beacon[i];
8033
8034 if (offset >= params.beacon_csa.tail_len)
8035 return -EINVAL;
8036
8037 if (params.beacon_csa.tail[offset] != params.count)
8038 return -EINVAL;
8039 }
8040
8041 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8042 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8043 if (!len || (len % sizeof(u16)))
8044 return -EINVAL;
8045
8046 params.n_counter_offsets_presp = len / sizeof(u16);
8047 if (rdev->wiphy.max_num_csa_counters &&
8048 (params.n_counter_offsets_presp >
8049 rdev->wiphy.max_num_csa_counters))
8050 return -EINVAL;
8051
8052 params.counter_offsets_presp =
8053 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8054
8055 /* sanity checks - counters should fit and be the same */
8056 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8057 u16 offset = params.counter_offsets_presp[i];
8058
8059 if (offset >= params.beacon_csa.probe_resp_len)
8060 return -EINVAL;
8061
8062 if (params.beacon_csa.probe_resp[offset] !=
8063 params.count)
8064 return -EINVAL;
8065 }
8066 }
8067
8068skip_beacons:
8069 err = nl80211_parse_chandef(rdev, info, &params.chandef);
8070 if (err)
8071 return err;
8072
8073 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8074 wdev->iftype))
8075 return -EINVAL;
8076
8077 err = cfg80211_chandef_dfs_required(wdev->wiphy,
8078 &params.chandef,
8079 wdev->iftype);
8080 if (err < 0)
8081 return err;
8082
8083 if (err > 0) {
8084 params.radar_required = true;
8085 if (need_handle_dfs_flag &&
8086 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8087 return -EINVAL;
8088 }
8089 }
8090
8091 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8092 params.block_tx = true;
8093
8094 wdev_lock(wdev);
8095 err = rdev_channel_switch(rdev, dev, &params);
8096 wdev_unlock(wdev);
8097
8098 return err;
8099}
8100
8101static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8102 u32 seq, int flags,
8103 struct cfg80211_registered_device *rdev,
8104 struct wireless_dev *wdev,
8105 struct cfg80211_internal_bss *intbss)
8106{
8107 struct cfg80211_bss *res = &intbss->pub;
8108 const struct cfg80211_bss_ies *ies;
8109 void *hdr;
8110 struct nlattr *bss;
8111
8112 ASSERT_WDEV_LOCK(wdev);
8113
8114 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8115 NL80211_CMD_NEW_SCAN_RESULTS);
8116 if (!hdr)
8117 return -1;
8118
8119 genl_dump_check_consistent(cb, hdr);
8120
8121 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8122 goto nla_put_failure;
8123 if (wdev->netdev &&
8124 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8125 goto nla_put_failure;
8126 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8127 NL80211_ATTR_PAD))
8128 goto nla_put_failure;
8129
8130 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
8131 if (!bss)
8132 goto nla_put_failure;
8133 if ((!is_zero_ether_addr(res->bssid) &&
8134 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8135 goto nla_put_failure;
8136
8137 rcu_read_lock();
8138 /* indicate whether we have probe response data or not */
8139 if (rcu_access_pointer(res->proberesp_ies) &&
8140 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8141 goto fail_unlock_rcu;
8142
8143 /* this pointer prefers to be pointed to probe response data
8144 * but is always valid
8145 */
8146 ies = rcu_dereference(res->ies);
8147 if (ies) {
8148 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8149 NL80211_BSS_PAD))
8150 goto fail_unlock_rcu;
8151 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8152 ies->len, ies->data))
8153 goto fail_unlock_rcu;
8154 }
8155
8156 /* and this pointer is always (unless driver didn't know) beacon data */
8157 ies = rcu_dereference(res->beacon_ies);
8158 if (ies && ies->from_beacon) {
8159 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8160 NL80211_BSS_PAD))
8161 goto fail_unlock_rcu;
8162 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8163 ies->len, ies->data))
8164 goto fail_unlock_rcu;
8165 }
8166 rcu_read_unlock();
8167
8168 if (res->beacon_interval &&
8169 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8170 goto nla_put_failure;
8171 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8172 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8173 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8174 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8175 jiffies_to_msecs(jiffies - intbss->ts)))
8176 goto nla_put_failure;
8177
8178 if (intbss->parent_tsf &&
8179 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8180 intbss->parent_tsf, NL80211_BSS_PAD) ||
8181 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8182 intbss->parent_bssid)))
8183 goto nla_put_failure;
8184
8185 if (intbss->ts_boottime &&
8186 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8187 intbss->ts_boottime, NL80211_BSS_PAD))
8188 goto nla_put_failure;
8189
8190 if (!nl80211_put_signal(msg, intbss->pub.chains,
8191 intbss->pub.chain_signal,
8192 NL80211_BSS_CHAIN_SIGNAL))
8193 goto nla_put_failure;
8194
8195 switch (rdev->wiphy.signal_type) {
8196 case CFG80211_SIGNAL_TYPE_MBM:
8197 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8198 goto nla_put_failure;
8199 break;
8200 case CFG80211_SIGNAL_TYPE_UNSPEC:
8201 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8202 goto nla_put_failure;
8203 break;
8204 default:
8205 break;
8206 }
8207
8208 switch (wdev->iftype) {
8209 case NL80211_IFTYPE_P2P_CLIENT:
8210 case NL80211_IFTYPE_STATION:
8211 if (intbss == wdev->current_bss &&
8212 nla_put_u32(msg, NL80211_BSS_STATUS,
8213 NL80211_BSS_STATUS_ASSOCIATED))
8214 goto nla_put_failure;
8215 break;
8216 case NL80211_IFTYPE_ADHOC:
8217 if (intbss == wdev->current_bss &&
8218 nla_put_u32(msg, NL80211_BSS_STATUS,
8219 NL80211_BSS_STATUS_IBSS_JOINED))
8220 goto nla_put_failure;
8221 break;
8222 default:
8223 break;
8224 }
8225
8226 nla_nest_end(msg, bss);
8227
8228 genlmsg_end(msg, hdr);
8229 return 0;
8230
8231 fail_unlock_rcu:
8232 rcu_read_unlock();
8233 nla_put_failure:
8234 genlmsg_cancel(msg, hdr);
8235 return -EMSGSIZE;
8236}
8237
8238static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8239{
8240 struct cfg80211_registered_device *rdev;
8241 struct cfg80211_internal_bss *scan;
8242 struct wireless_dev *wdev;
8243 int start = cb->args[2], idx = 0;
8244 int err;
8245
8246 rtnl_lock();
8247 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8248 if (err) {
8249 rtnl_unlock();
8250 return err;
8251 }
8252
8253 wdev_lock(wdev);
8254 spin_lock_bh(&rdev->bss_lock);
8255
8256 /*
8257 * dump_scan will be called multiple times to break up the scan results
8258 * into multiple messages. It is unlikely that any more bss-es will be
8259 * expired after the first call, so only call only call this on the
8260 * first dump_scan invocation.
8261 */
8262 if (start == 0)
8263 cfg80211_bss_expire(rdev);
8264
8265 cb->seq = rdev->bss_generation;
8266
8267 list_for_each_entry(scan, &rdev->bss_list, list) {
8268 if (++idx <= start)
8269 continue;
8270 if (nl80211_send_bss(skb, cb,
8271 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8272 rdev, wdev, scan) < 0) {
8273 idx--;
8274 break;
8275 }
8276 }
8277
8278 spin_unlock_bh(&rdev->bss_lock);
8279 wdev_unlock(wdev);
8280
8281 cb->args[2] = idx;
8282 rtnl_unlock();
8283
8284 return skb->len;
8285}
8286
8287static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8288 int flags, struct net_device *dev,
8289 bool allow_radio_stats,
8290 struct survey_info *survey)
8291{
8292 void *hdr;
8293 struct nlattr *infoattr;
8294
8295 /* skip radio stats if userspace didn't request them */
8296 if (!survey->channel && !allow_radio_stats)
8297 return 0;
8298
8299 hdr = nl80211hdr_put(msg, portid, seq, flags,
8300 NL80211_CMD_NEW_SURVEY_RESULTS);
8301 if (!hdr)
8302 return -ENOMEM;
8303
8304 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8305 goto nla_put_failure;
8306
8307 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
8308 if (!infoattr)
8309 goto nla_put_failure;
8310
8311 if (survey->channel &&
8312 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8313 survey->channel->center_freq))
8314 goto nla_put_failure;
8315
8316 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8317 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8318 goto nla_put_failure;
8319 if ((survey->filled & SURVEY_INFO_IN_USE) &&
8320 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8321 goto nla_put_failure;
8322 if ((survey->filled & SURVEY_INFO_TIME) &&
8323 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8324 survey->time, NL80211_SURVEY_INFO_PAD))
8325 goto nla_put_failure;
8326 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8327 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8328 survey->time_busy, NL80211_SURVEY_INFO_PAD))
8329 goto nla_put_failure;
8330 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8331 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8332 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8333 goto nla_put_failure;
8334 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8335 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8336 survey->time_rx, NL80211_SURVEY_INFO_PAD))
8337 goto nla_put_failure;
8338 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8339 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8340 survey->time_tx, NL80211_SURVEY_INFO_PAD))
8341 goto nla_put_failure;
8342 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8343 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8344 survey->time_scan, NL80211_SURVEY_INFO_PAD))
8345 goto nla_put_failure;
8346
8347 nla_nest_end(msg, infoattr);
8348
8349 genlmsg_end(msg, hdr);
8350 return 0;
8351
8352 nla_put_failure:
8353 genlmsg_cancel(msg, hdr);
8354 return -EMSGSIZE;
8355}
8356
8357static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8358{
8359 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8360 struct survey_info survey;
8361 struct cfg80211_registered_device *rdev;
8362 struct wireless_dev *wdev;
8363 int survey_idx = cb->args[2];
8364 int res;
8365 bool radio_stats;
8366
8367 rtnl_lock();
8368 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8369 if (res)
8370 goto out_err;
8371
8372 /* prepare_wdev_dump parsed the attributes */
8373 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8374
8375 if (!wdev->netdev) {
8376 res = -EINVAL;
8377 goto out_err;
8378 }
8379
8380 if (!rdev->ops->dump_survey) {
8381 res = -EOPNOTSUPP;
8382 goto out_err;
8383 }
8384
8385 while (1) {
8386 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8387 if (res == -ENOENT)
8388 break;
8389 if (res)
8390 goto out_err;
8391
8392 /* don't send disabled channels, but do send non-channel data */
8393 if (survey.channel &&
8394 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8395 survey_idx++;
8396 continue;
8397 }
8398
8399 if (nl80211_send_survey(skb,
8400 NETLINK_CB(cb->skb).portid,
8401 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8402 wdev->netdev, radio_stats, &survey) < 0)
8403 goto out;
8404 survey_idx++;
8405 }
8406
8407 out:
8408 cb->args[2] = survey_idx;
8409 res = skb->len;
8410 out_err:
8411 rtnl_unlock();
8412 return res;
8413}
8414
8415static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8416{
8417 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8418 NL80211_WPA_VERSION_2));
8419}
8420
8421static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8422{
8423 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8424 struct net_device *dev = info->user_ptr[1];
8425 struct ieee80211_channel *chan;
8426 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8427 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8428 enum nl80211_auth_type auth_type;
8429 struct key_parse key;
8430 bool local_state_change;
8431
8432 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8433 return -EINVAL;
8434
8435 if (!info->attrs[NL80211_ATTR_MAC])
8436 return -EINVAL;
8437
8438 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8439 return -EINVAL;
8440
8441 if (!info->attrs[NL80211_ATTR_SSID])
8442 return -EINVAL;
8443
8444 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8445 return -EINVAL;
8446
8447 err = nl80211_parse_key(info, &key);
8448 if (err)
8449 return err;
8450
8451 if (key.idx >= 0) {
8452 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8453 return -EINVAL;
8454 if (!key.p.key || !key.p.key_len)
8455 return -EINVAL;
8456 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8457 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8458 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8459 key.p.key_len != WLAN_KEY_LEN_WEP104))
8460 return -EINVAL;
8461 if (key.idx > 3)
8462 return -EINVAL;
8463 } else {
8464 key.p.key_len = 0;
8465 key.p.key = NULL;
8466 }
8467
8468 if (key.idx >= 0) {
8469 int i;
8470 bool ok = false;
8471
8472 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8473 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8474 ok = true;
8475 break;
8476 }
8477 }
8478 if (!ok)
8479 return -EINVAL;
8480 }
8481
8482 if (!rdev->ops->auth)
8483 return -EOPNOTSUPP;
8484
8485 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8486 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8487 return -EOPNOTSUPP;
8488
8489 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8490 chan = nl80211_get_valid_chan(&rdev->wiphy,
8491 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8492 if (!chan)
8493 return -EINVAL;
8494
8495 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8496 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8497
8498 if (info->attrs[NL80211_ATTR_IE]) {
8499 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8500 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8501 }
8502
8503 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8504 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8505 return -EINVAL;
8506
8507 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8508 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8509 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8510 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8511 !info->attrs[NL80211_ATTR_AUTH_DATA])
8512 return -EINVAL;
8513
8514 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8515 if (auth_type != NL80211_AUTHTYPE_SAE &&
8516 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8517 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8518 auth_type != NL80211_AUTHTYPE_FILS_PK)
8519 return -EINVAL;
8520 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8521 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8522 /* need to include at least Auth Transaction and Status Code */
8523 if (auth_data_len < 4)
8524 return -EINVAL;
8525 }
8526
8527 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8528
8529 /*
8530 * Since we no longer track auth state, ignore
8531 * requests to only change local state.
8532 */
8533 if (local_state_change)
8534 return 0;
8535
8536 wdev_lock(dev->ieee80211_ptr);
8537 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8538 ssid, ssid_len, ie, ie_len,
8539 key.p.key, key.p.key_len, key.idx,
8540 auth_data, auth_data_len);
8541 wdev_unlock(dev->ieee80211_ptr);
8542 return err;
8543}
8544
8545static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8546 struct genl_info *info)
8547{
8548 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8549 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8550 return -EINVAL;
8551 }
8552
8553 if (!rdev->ops->tx_control_port ||
8554 !wiphy_ext_feature_isset(&rdev->wiphy,
8555 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8556 return -EOPNOTSUPP;
8557
8558 return 0;
8559}
8560
8561static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8562 struct genl_info *info,
8563 struct cfg80211_crypto_settings *settings,
8564 int cipher_limit)
8565{
8566 memset(settings, 0, sizeof(*settings));
8567
8568 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8569
8570 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8571 u16 proto;
8572
8573 proto = nla_get_u16(
8574 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8575 settings->control_port_ethertype = cpu_to_be16(proto);
8576 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8577 proto != ETH_P_PAE)
8578 return -EINVAL;
8579 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8580 settings->control_port_no_encrypt = true;
8581 } else
8582 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8583
8584 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8585 int r = validate_pae_over_nl80211(rdev, info);
8586
8587 if (r < 0)
8588 return r;
8589
8590 settings->control_port_over_nl80211 = true;
8591 }
8592
8593 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8594 void *data;
8595 int len, i;
8596
8597 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8598 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8599 settings->n_ciphers_pairwise = len / sizeof(u32);
8600
8601 if (len % sizeof(u32))
8602 return -EINVAL;
8603
8604 if (settings->n_ciphers_pairwise > cipher_limit)
8605 return -EINVAL;
8606
8607 memcpy(settings->ciphers_pairwise, data, len);
8608
8609 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8610 if (!cfg80211_supported_cipher_suite(
8611 &rdev->wiphy,
8612 settings->ciphers_pairwise[i]))
8613 return -EINVAL;
8614 }
8615
8616 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8617 settings->cipher_group =
8618 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8619 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8620 settings->cipher_group))
8621 return -EINVAL;
8622 }
8623
8624 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8625 settings->wpa_versions =
8626 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8627 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8628 return -EINVAL;
8629 }
8630
8631 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8632 void *data;
8633 int len;
8634
8635 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8636 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8637 settings->n_akm_suites = len / sizeof(u32);
8638
8639 if (len % sizeof(u32))
8640 return -EINVAL;
8641
8642 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8643 return -EINVAL;
8644
8645 memcpy(settings->akm_suites, data, len);
8646 }
8647
8648 if (info->attrs[NL80211_ATTR_PMK]) {
8649 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8650 return -EINVAL;
8651 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8652 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8653 return -EINVAL;
8654 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8655 }
8656
8657 return 0;
8658}
8659
8660static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8661{
8662 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8663 struct net_device *dev = info->user_ptr[1];
8664 struct ieee80211_channel *chan;
8665 struct cfg80211_assoc_request req = {};
8666 const u8 *bssid, *ssid;
8667 int err, ssid_len = 0;
8668
8669 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8670 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8671 return -EPERM;
8672
8673 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8674 return -EINVAL;
8675
8676 if (!info->attrs[NL80211_ATTR_MAC] ||
8677 !info->attrs[NL80211_ATTR_SSID] ||
8678 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8679 return -EINVAL;
8680
8681 if (!rdev->ops->assoc)
8682 return -EOPNOTSUPP;
8683
8684 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8685 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8686 return -EOPNOTSUPP;
8687
8688 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8689
8690 chan = nl80211_get_valid_chan(&rdev->wiphy,
8691 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8692 if (!chan)
8693 return -EINVAL;
8694
8695 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8696 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8697
8698 if (info->attrs[NL80211_ATTR_IE]) {
8699 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8700 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8701 }
8702
8703 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8704 enum nl80211_mfp mfp =
8705 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8706 if (mfp == NL80211_MFP_REQUIRED)
8707 req.use_mfp = true;
8708 else if (mfp != NL80211_MFP_NO)
8709 return -EINVAL;
8710 }
8711
8712 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8713 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8714
8715 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8716 req.flags |= ASSOC_REQ_DISABLE_HT;
8717
8718 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8719 memcpy(&req.ht_capa_mask,
8720 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8721 sizeof(req.ht_capa_mask));
8722
8723 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8724 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8725 return -EINVAL;
8726 memcpy(&req.ht_capa,
8727 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8728 sizeof(req.ht_capa));
8729 }
8730
8731 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8732 req.flags |= ASSOC_REQ_DISABLE_VHT;
8733
8734 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8735 memcpy(&req.vht_capa_mask,
8736 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8737 sizeof(req.vht_capa_mask));
8738
8739 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8740 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8741 return -EINVAL;
8742 memcpy(&req.vht_capa,
8743 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8744 sizeof(req.vht_capa));
8745 }
8746
8747 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8748 if (!((rdev->wiphy.features &
8749 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8750 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8751 !wiphy_ext_feature_isset(&rdev->wiphy,
8752 NL80211_EXT_FEATURE_RRM))
8753 return -EINVAL;
8754 req.flags |= ASSOC_REQ_USE_RRM;
8755 }
8756
8757 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8758 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8759 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8760 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8761 return -EINVAL;
8762 req.fils_nonces =
8763 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8764 }
8765
8766 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8767 if (!err) {
8768 wdev_lock(dev->ieee80211_ptr);
8769
8770 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8771 ssid, ssid_len, &req);
8772
8773 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8774 dev->ieee80211_ptr->conn_owner_nlportid =
8775 info->snd_portid;
8776 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8777 bssid, ETH_ALEN);
8778 }
8779
8780 wdev_unlock(dev->ieee80211_ptr);
8781 }
8782
8783 return err;
8784}
8785
8786static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8787{
8788 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8789 struct net_device *dev = info->user_ptr[1];
8790 const u8 *ie = NULL, *bssid;
8791 int ie_len = 0, err;
8792 u16 reason_code;
8793 bool local_state_change;
8794
8795 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8796 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8797 return -EPERM;
8798
8799 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8800 return -EINVAL;
8801
8802 if (!info->attrs[NL80211_ATTR_MAC])
8803 return -EINVAL;
8804
8805 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8806 return -EINVAL;
8807
8808 if (!rdev->ops->deauth)
8809 return -EOPNOTSUPP;
8810
8811 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8812 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8813 return -EOPNOTSUPP;
8814
8815 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8816
8817 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8818 if (reason_code == 0) {
8819 /* Reason Code 0 is reserved */
8820 return -EINVAL;
8821 }
8822
8823 if (info->attrs[NL80211_ATTR_IE]) {
8824 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8825 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8826 }
8827
8828 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8829
8830 wdev_lock(dev->ieee80211_ptr);
8831 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8832 local_state_change);
8833 wdev_unlock(dev->ieee80211_ptr);
8834 return err;
8835}
8836
8837static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8838{
8839 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8840 struct net_device *dev = info->user_ptr[1];
8841 const u8 *ie = NULL, *bssid;
8842 int ie_len = 0, err;
8843 u16 reason_code;
8844 bool local_state_change;
8845
8846 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8847 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8848 return -EPERM;
8849
8850 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8851 return -EINVAL;
8852
8853 if (!info->attrs[NL80211_ATTR_MAC])
8854 return -EINVAL;
8855
8856 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8857 return -EINVAL;
8858
8859 if (!rdev->ops->disassoc)
8860 return -EOPNOTSUPP;
8861
8862 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8863 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8864 return -EOPNOTSUPP;
8865
8866 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8867
8868 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8869 if (reason_code == 0) {
8870 /* Reason Code 0 is reserved */
8871 return -EINVAL;
8872 }
8873
8874 if (info->attrs[NL80211_ATTR_IE]) {
8875 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8876 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8877 }
8878
8879 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8880
8881 wdev_lock(dev->ieee80211_ptr);
8882 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8883 local_state_change);
8884 wdev_unlock(dev->ieee80211_ptr);
8885 return err;
8886}
8887
8888static bool
8889nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8890 int mcast_rate[NUM_NL80211_BANDS],
8891 int rateval)
8892{
8893 struct wiphy *wiphy = &rdev->wiphy;
8894 bool found = false;
8895 int band, i;
8896
8897 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8898 struct ieee80211_supported_band *sband;
8899
8900 sband = wiphy->bands[band];
8901 if (!sband)
8902 continue;
8903
8904 for (i = 0; i < sband->n_bitrates; i++) {
8905 if (sband->bitrates[i].bitrate == rateval) {
8906 mcast_rate[band] = i + 1;
8907 found = true;
8908 break;
8909 }
8910 }
8911 }
8912
8913 return found;
8914}
8915
8916static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8917{
8918 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8919 struct net_device *dev = info->user_ptr[1];
8920 struct cfg80211_ibss_params ibss;
8921 struct wiphy *wiphy;
8922 struct cfg80211_cached_keys *connkeys = NULL;
8923 int err;
8924
8925 memset(&ibss, 0, sizeof(ibss));
8926
8927 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8928 return -EINVAL;
8929
8930 if (!info->attrs[NL80211_ATTR_SSID] ||
8931 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8932 return -EINVAL;
8933
8934 ibss.beacon_interval = 100;
8935
8936 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8937 ibss.beacon_interval =
8938 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8939
8940 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8941 ibss.beacon_interval);
8942 if (err)
8943 return err;
8944
8945 if (!rdev->ops->join_ibss)
8946 return -EOPNOTSUPP;
8947
8948 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8949 return -EOPNOTSUPP;
8950
8951 wiphy = &rdev->wiphy;
8952
8953 if (info->attrs[NL80211_ATTR_MAC]) {
8954 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8955
8956 if (!is_valid_ether_addr(ibss.bssid))
8957 return -EINVAL;
8958 }
8959 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8960 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8961
8962 if (info->attrs[NL80211_ATTR_IE]) {
8963 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8964 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8965 }
8966
8967 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8968 if (err)
8969 return err;
8970
8971 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8972 NL80211_IFTYPE_ADHOC))
8973 return -EINVAL;
8974
8975 switch (ibss.chandef.width) {
8976 case NL80211_CHAN_WIDTH_5:
8977 case NL80211_CHAN_WIDTH_10:
8978 case NL80211_CHAN_WIDTH_20_NOHT:
8979 break;
8980 case NL80211_CHAN_WIDTH_20:
8981 case NL80211_CHAN_WIDTH_40:
8982 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8983 return -EINVAL;
8984 break;
8985 case NL80211_CHAN_WIDTH_80:
8986 case NL80211_CHAN_WIDTH_80P80:
8987 case NL80211_CHAN_WIDTH_160:
8988 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8989 return -EINVAL;
8990 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8991 NL80211_EXT_FEATURE_VHT_IBSS))
8992 return -EINVAL;
8993 break;
8994 default:
8995 return -EINVAL;
8996 }
8997
8998 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8999 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9000
9001 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9002 u8 *rates =
9003 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9004 int n_rates =
9005 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9006 struct ieee80211_supported_band *sband =
9007 wiphy->bands[ibss.chandef.chan->band];
9008
9009 err = ieee80211_get_ratemask(sband, rates, n_rates,
9010 &ibss.basic_rates);
9011 if (err)
9012 return err;
9013 }
9014
9015 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9016 memcpy(&ibss.ht_capa_mask,
9017 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9018 sizeof(ibss.ht_capa_mask));
9019
9020 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9021 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9022 return -EINVAL;
9023 memcpy(&ibss.ht_capa,
9024 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9025 sizeof(ibss.ht_capa));
9026 }
9027
9028 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9029 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9030 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9031 return -EINVAL;
9032
9033 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9034 bool no_ht = false;
9035
9036 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9037 if (IS_ERR(connkeys))
9038 return PTR_ERR(connkeys);
9039
9040 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9041 no_ht) {
9042 kzfree(connkeys);
9043 return -EINVAL;
9044 }
9045 }
9046
9047 ibss.control_port =
9048 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9049
9050 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9051 int r = validate_pae_over_nl80211(rdev, info);
9052
9053 if (r < 0) {
9054 kzfree(connkeys);
9055 return r;
9056 }
9057
9058 ibss.control_port_over_nl80211 = true;
9059 }
9060
9061 ibss.userspace_handles_dfs =
9062 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9063
9064 wdev_lock(dev->ieee80211_ptr);
9065 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9066 if (err)
9067 kzfree(connkeys);
9068 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9069 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9070 wdev_unlock(dev->ieee80211_ptr);
9071
9072 return err;
9073}
9074
9075static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9076{
9077 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9078 struct net_device *dev = info->user_ptr[1];
9079
9080 if (!rdev->ops->leave_ibss)
9081 return -EOPNOTSUPP;
9082
9083 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9084 return -EOPNOTSUPP;
9085
9086 return cfg80211_leave_ibss(rdev, dev, false);
9087}
9088
9089static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9090{
9091 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9092 struct net_device *dev = info->user_ptr[1];
9093 int mcast_rate[NUM_NL80211_BANDS];
9094 u32 nla_rate;
9095 int err;
9096
9097 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9098 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9099 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9100 return -EOPNOTSUPP;
9101
9102 if (!rdev->ops->set_mcast_rate)
9103 return -EOPNOTSUPP;
9104
9105 memset(mcast_rate, 0, sizeof(mcast_rate));
9106
9107 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9108 return -EINVAL;
9109
9110 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9111 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9112 return -EINVAL;
9113
9114 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9115
9116 return err;
9117}
9118
9119static struct sk_buff *
9120__cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9121 struct wireless_dev *wdev, int approxlen,
9122 u32 portid, u32 seq, enum nl80211_commands cmd,
9123 enum nl80211_attrs attr,
9124 const struct nl80211_vendor_cmd_info *info,
9125 gfp_t gfp)
9126{
9127 struct sk_buff *skb;
9128 void *hdr;
9129 struct nlattr *data;
9130
9131 skb = nlmsg_new(approxlen + 100, gfp);
9132 if (!skb)
9133 return NULL;
9134
9135 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9136 if (!hdr) {
9137 kfree_skb(skb);
9138 return NULL;
9139 }
9140
9141 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9142 goto nla_put_failure;
9143
9144 if (info) {
9145 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9146 info->vendor_id))
9147 goto nla_put_failure;
9148 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9149 info->subcmd))
9150 goto nla_put_failure;
9151 }
9152
9153 if (wdev) {
9154 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9155 wdev_id(wdev), NL80211_ATTR_PAD))
9156 goto nla_put_failure;
9157 if (wdev->netdev &&
9158 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9159 wdev->netdev->ifindex))
9160 goto nla_put_failure;
9161 }
9162
9163 data = nla_nest_start(skb, attr);
9164 if (!data)
9165 goto nla_put_failure;
9166
9167 ((void **)skb->cb)[0] = rdev;
9168 ((void **)skb->cb)[1] = hdr;
9169 ((void **)skb->cb)[2] = data;
9170
9171 return skb;
9172
9173 nla_put_failure:
9174 kfree_skb(skb);
9175 return NULL;
9176}
9177
9178struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9179 struct wireless_dev *wdev,
9180 enum nl80211_commands cmd,
9181 enum nl80211_attrs attr,
9182 int vendor_event_idx,
9183 int approxlen, gfp_t gfp)
9184{
9185 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9186 const struct nl80211_vendor_cmd_info *info;
9187
9188 switch (cmd) {
9189 case NL80211_CMD_TESTMODE:
9190 if (WARN_ON(vendor_event_idx != -1))
9191 return NULL;
9192 info = NULL;
9193 break;
9194 case NL80211_CMD_VENDOR:
9195 if (WARN_ON(vendor_event_idx < 0 ||
9196 vendor_event_idx >= wiphy->n_vendor_events))
9197 return NULL;
9198 info = &wiphy->vendor_events[vendor_event_idx];
9199 break;
9200 default:
9201 WARN_ON(1);
9202 return NULL;
9203 }
9204
9205 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
9206 cmd, attr, info, gfp);
9207}
9208EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9209
9210void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9211{
9212 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9213 void *hdr = ((void **)skb->cb)[1];
9214 struct nlattr *data = ((void **)skb->cb)[2];
9215 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9216
9217 /* clear CB data for netlink core to own from now on */
9218 memset(skb->cb, 0, sizeof(skb->cb));
9219
9220 nla_nest_end(skb, data);
9221 genlmsg_end(skb, hdr);
9222
9223 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9224 mcgrp = NL80211_MCGRP_VENDOR;
9225
9226 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
9227 mcgrp, gfp);
9228}
9229EXPORT_SYMBOL(__cfg80211_send_event_skb);
9230
9231#ifdef CONFIG_NL80211_TESTMODE
9232static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9233{
9234 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9235 struct wireless_dev *wdev =
9236 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9237 int err;
9238
9239 if (!rdev->ops->testmode_cmd)
9240 return -EOPNOTSUPP;
9241
9242 if (IS_ERR(wdev)) {
9243 err = PTR_ERR(wdev);
9244 if (err != -EINVAL)
9245 return err;
9246 wdev = NULL;
9247 } else if (wdev->wiphy != &rdev->wiphy) {
9248 return -EINVAL;
9249 }
9250
9251 if (!info->attrs[NL80211_ATTR_TESTDATA])
9252 return -EINVAL;
9253
9254 rdev->cur_cmd_info = info;
9255 err = rdev_testmode_cmd(rdev, wdev,
9256 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9257 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9258 rdev->cur_cmd_info = NULL;
9259
9260 return err;
9261}
9262
9263static int nl80211_testmode_dump(struct sk_buff *skb,
9264 struct netlink_callback *cb)
9265{
9266 struct cfg80211_registered_device *rdev;
9267 int err;
9268 long phy_idx;
9269 void *data = NULL;
9270 int data_len = 0;
9271
9272 rtnl_lock();
9273
9274 if (cb->args[0]) {
9275 /*
9276 * 0 is a valid index, but not valid for args[0],
9277 * so we need to offset by 1.
9278 */
9279 phy_idx = cb->args[0] - 1;
9280
9281 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9282 if (!rdev) {
9283 err = -ENOENT;
9284 goto out_err;
9285 }
9286 } else {
9287 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
9288
9289 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
9290 attrbuf, nl80211_fam.maxattr,
9291 nl80211_policy, NULL);
9292 if (err)
9293 goto out_err;
9294
9295 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9296 if (IS_ERR(rdev)) {
9297 err = PTR_ERR(rdev);
9298 goto out_err;
9299 }
9300 phy_idx = rdev->wiphy_idx;
9301
9302 if (attrbuf[NL80211_ATTR_TESTDATA])
9303 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9304 }
9305
9306 if (cb->args[1]) {
9307 data = nla_data((void *)cb->args[1]);
9308 data_len = nla_len((void *)cb->args[1]);
9309 }
9310
9311 if (!rdev->ops->testmode_dump) {
9312 err = -EOPNOTSUPP;
9313 goto out_err;
9314 }
9315
9316 while (1) {
9317 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9318 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9319 NL80211_CMD_TESTMODE);
9320 struct nlattr *tmdata;
9321
9322 if (!hdr)
9323 break;
9324
9325 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9326 genlmsg_cancel(skb, hdr);
9327 break;
9328 }
9329
9330 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
9331 if (!tmdata) {
9332 genlmsg_cancel(skb, hdr);
9333 break;
9334 }
9335 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9336 nla_nest_end(skb, tmdata);
9337
9338 if (err == -ENOBUFS || err == -ENOENT) {
9339 genlmsg_cancel(skb, hdr);
9340 break;
9341 } else if (err) {
9342 genlmsg_cancel(skb, hdr);
9343 goto out_err;
9344 }
9345
9346 genlmsg_end(skb, hdr);
9347 }
9348
9349 err = skb->len;
9350 /* see above */
9351 cb->args[0] = phy_idx + 1;
9352 out_err:
9353 rtnl_unlock();
9354 return err;
9355}
9356#endif
9357
9358static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9359{
9360 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9361 struct net_device *dev = info->user_ptr[1];
9362 struct cfg80211_connect_params connect;
9363 struct wiphy *wiphy;
9364 struct cfg80211_cached_keys *connkeys = NULL;
9365 int err;
9366
9367 memset(&connect, 0, sizeof(connect));
9368
9369 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9370 return -EINVAL;
9371
9372 if (!info->attrs[NL80211_ATTR_SSID] ||
9373 !nla_len(info->attrs[NL80211_ATTR_SSID]))
9374 return -EINVAL;
9375
9376 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9377 connect.auth_type =
9378 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9379 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9380 NL80211_CMD_CONNECT))
9381 return -EINVAL;
9382 } else
9383 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9384
9385 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9386
9387 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9388 !wiphy_ext_feature_isset(&rdev->wiphy,
9389 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9390 return -EINVAL;
9391 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9392
9393 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9394 NL80211_MAX_NR_CIPHER_SUITES);
9395 if (err)
9396 return err;
9397
9398 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9399 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9400 return -EOPNOTSUPP;
9401
9402 wiphy = &rdev->wiphy;
9403
9404 connect.bg_scan_period = -1;
9405 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9406 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9407 connect.bg_scan_period =
9408 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9409 }
9410
9411 if (info->attrs[NL80211_ATTR_MAC])
9412 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9413 else if (info->attrs[NL80211_ATTR_MAC_HINT])
9414 connect.bssid_hint =
9415 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9416 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9417 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9418
9419 if (info->attrs[NL80211_ATTR_IE]) {
9420 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9421 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9422 }
9423
9424 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9425 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9426 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9427 !wiphy_ext_feature_isset(&rdev->wiphy,
9428 NL80211_EXT_FEATURE_MFP_OPTIONAL))
9429 return -EOPNOTSUPP;
9430
9431 if (connect.mfp != NL80211_MFP_REQUIRED &&
9432 connect.mfp != NL80211_MFP_NO &&
9433 connect.mfp != NL80211_MFP_OPTIONAL)
9434 return -EINVAL;
9435 } else {
9436 connect.mfp = NL80211_MFP_NO;
9437 }
9438
9439 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9440 connect.prev_bssid =
9441 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9442
9443 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9444 connect.channel = nl80211_get_valid_chan(
9445 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9446 if (!connect.channel)
9447 return -EINVAL;
9448 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9449 connect.channel_hint = nl80211_get_valid_chan(
9450 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9451 if (!connect.channel_hint)
9452 return -EINVAL;
9453 }
9454
9455 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9456 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9457 if (IS_ERR(connkeys))
9458 return PTR_ERR(connkeys);
9459 }
9460
9461 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9462 connect.flags |= ASSOC_REQ_DISABLE_HT;
9463
9464 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9465 memcpy(&connect.ht_capa_mask,
9466 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9467 sizeof(connect.ht_capa_mask));
9468
9469 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9470 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9471 kzfree(connkeys);
9472 return -EINVAL;
9473 }
9474 memcpy(&connect.ht_capa,
9475 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9476 sizeof(connect.ht_capa));
9477 }
9478
9479 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9480 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9481
9482 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9483 memcpy(&connect.vht_capa_mask,
9484 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9485 sizeof(connect.vht_capa_mask));
9486
9487 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9488 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9489 kzfree(connkeys);
9490 return -EINVAL;
9491 }
9492 memcpy(&connect.vht_capa,
9493 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9494 sizeof(connect.vht_capa));
9495 }
9496
9497 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9498 if (!((rdev->wiphy.features &
9499 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9500 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9501 !wiphy_ext_feature_isset(&rdev->wiphy,
9502 NL80211_EXT_FEATURE_RRM)) {
9503 kzfree(connkeys);
9504 return -EINVAL;
9505 }
9506 connect.flags |= ASSOC_REQ_USE_RRM;
9507 }
9508
9509 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9510 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9511 kzfree(connkeys);
9512 return -EOPNOTSUPP;
9513 }
9514
9515 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9516 /* bss selection makes no sense if bssid is set */
9517 if (connect.bssid) {
9518 kzfree(connkeys);
9519 return -EINVAL;
9520 }
9521
9522 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9523 wiphy, &connect.bss_select);
9524 if (err) {
9525 kzfree(connkeys);
9526 return err;
9527 }
9528 }
9529
9530 if (wiphy_ext_feature_isset(&rdev->wiphy,
9531 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9532 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9533 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9534 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9535 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9536 connect.fils_erp_username =
9537 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9538 connect.fils_erp_username_len =
9539 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9540 connect.fils_erp_realm =
9541 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9542 connect.fils_erp_realm_len =
9543 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9544 connect.fils_erp_next_seq_num =
9545 nla_get_u16(
9546 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9547 connect.fils_erp_rrk =
9548 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9549 connect.fils_erp_rrk_len =
9550 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9551 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9552 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9553 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9554 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9555 kzfree(connkeys);
9556 return -EINVAL;
9557 }
9558
9559 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
9560 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
xjb04a4022021-11-25 15:01:52 +08009561 GENL_SET_ERR_MSG(info,
9562 "external auth requires connection ownership");
9563 return -EINVAL;
9564 }
9565 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
9566 }
9567
9568 wdev_lock(dev->ieee80211_ptr);
9569
9570 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9571 connect.prev_bssid);
qs.xiong1d38d612023-11-16 16:37:34 +08009572 printk("DeBugAssoc cfg80211_conenct return %d nl80211.c %s %d",err,__func__,__LINE__);
xjb04a4022021-11-25 15:01:52 +08009573 if (err)
9574 kzfree(connkeys);
9575
9576 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9577 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9578 if (connect.bssid)
9579 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9580 connect.bssid, ETH_ALEN);
9581 else
9582 memset(dev->ieee80211_ptr->disconnect_bssid,
9583 0, ETH_ALEN);
9584 }
9585
9586 wdev_unlock(dev->ieee80211_ptr);
9587
9588 return err;
9589}
9590
9591static int nl80211_update_connect_params(struct sk_buff *skb,
9592 struct genl_info *info)
9593{
9594 struct cfg80211_connect_params connect = {};
9595 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9596 struct net_device *dev = info->user_ptr[1];
9597 struct wireless_dev *wdev = dev->ieee80211_ptr;
9598 bool fils_sk_offload;
9599 u32 auth_type;
9600 u32 changed = 0;
9601 int ret;
9602
9603 if (!rdev->ops->update_connect_params)
9604 return -EOPNOTSUPP;
9605
9606 if (info->attrs[NL80211_ATTR_IE]) {
9607 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9608 return -EINVAL;
9609 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9610 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9611 changed |= UPDATE_ASSOC_IES;
9612 }
9613
9614 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
9615 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
9616
9617 /*
9618 * when driver supports fils-sk offload all attributes must be
9619 * provided. So the else covers "fils-sk-not-all" and
9620 * "no-fils-sk-any".
9621 */
9622 if (fils_sk_offload &&
9623 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9624 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9625 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9626 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9627 connect.fils_erp_username =
9628 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9629 connect.fils_erp_username_len =
9630 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9631 connect.fils_erp_realm =
9632 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9633 connect.fils_erp_realm_len =
9634 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9635 connect.fils_erp_next_seq_num =
9636 nla_get_u16(
9637 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9638 connect.fils_erp_rrk =
9639 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9640 connect.fils_erp_rrk_len =
9641 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9642 changed |= UPDATE_FILS_ERP_INFO;
9643 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9644 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9645 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9646 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9647 return -EINVAL;
9648 }
9649
9650 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9651 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9652 if (!nl80211_valid_auth_type(rdev, auth_type,
9653 NL80211_CMD_CONNECT))
9654 return -EINVAL;
9655
9656 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
9657 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
9658 return -EINVAL;
9659
9660 connect.auth_type = auth_type;
9661 changed |= UPDATE_AUTH_TYPE;
9662 }
9663
9664 wdev_lock(dev->ieee80211_ptr);
9665 if (!wdev->current_bss)
9666 ret = -ENOLINK;
9667 else
9668 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9669 wdev_unlock(dev->ieee80211_ptr);
9670
9671 return ret;
9672}
9673
9674static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9675{
9676 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9677 struct net_device *dev = info->user_ptr[1];
9678 u16 reason;
9679 int ret;
9680
9681 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9682 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9683 return -EPERM;
9684
9685 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9686 reason = WLAN_REASON_DEAUTH_LEAVING;
9687 else
9688 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9689
9690 if (reason == 0)
9691 return -EINVAL;
9692
9693 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9694 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9695 return -EOPNOTSUPP;
9696
9697 wdev_lock(dev->ieee80211_ptr);
9698 ret = cfg80211_disconnect(rdev, dev, reason, true);
9699 wdev_unlock(dev->ieee80211_ptr);
9700 return ret;
9701}
9702
9703static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9704{
9705 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9706 struct net *net;
9707 int err;
9708
9709 if (info->attrs[NL80211_ATTR_PID]) {
9710 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9711
9712 net = get_net_ns_by_pid(pid);
9713 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9714 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9715
9716 net = get_net_ns_by_fd(fd);
9717 } else {
9718 return -EINVAL;
9719 }
9720
9721 if (IS_ERR(net))
9722 return PTR_ERR(net);
9723
9724 err = 0;
9725
9726 /* check if anything to do */
9727 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9728 err = cfg80211_switch_netns(rdev, net);
9729
9730 put_net(net);
9731 return err;
9732}
9733
9734static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9735{
9736 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9737 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9738 struct cfg80211_pmksa *pmksa) = NULL;
9739 struct net_device *dev = info->user_ptr[1];
9740 struct cfg80211_pmksa pmksa;
9741
9742 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9743
9744 if (!info->attrs[NL80211_ATTR_PMKID])
9745 return -EINVAL;
9746
9747 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9748
9749 if (info->attrs[NL80211_ATTR_MAC]) {
9750 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9751 } else if (info->attrs[NL80211_ATTR_SSID] &&
9752 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9753 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9754 info->attrs[NL80211_ATTR_PMK])) {
9755 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9756 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9757 pmksa.cache_id =
9758 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9759 } else {
9760 return -EINVAL;
9761 }
9762 if (info->attrs[NL80211_ATTR_PMK]) {
9763 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9764 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9765 }
9766
9767//tianyan@2021.7.27 modify for add wifi6 module start
9768 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9769 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
9770 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
9771 wiphy_ext_feature_isset(&rdev->wiphy,
9772 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
9773 return -EOPNOTSUPP;
9774//tianyan@2021.7.27 modify for add wifi6 module end
9775
9776 switch (info->genlhdr->cmd) {
9777 case NL80211_CMD_SET_PMKSA:
9778 rdev_ops = rdev->ops->set_pmksa;
9779 break;
9780 case NL80211_CMD_DEL_PMKSA:
9781 rdev_ops = rdev->ops->del_pmksa;
9782 break;
9783 default:
9784 WARN_ON(1);
9785 break;
9786 }
9787
9788 if (!rdev_ops)
9789 return -EOPNOTSUPP;
9790
9791 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9792}
9793
9794static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9795{
9796 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9797 struct net_device *dev = info->user_ptr[1];
9798
9799 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9800 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9801 return -EOPNOTSUPP;
9802
9803 if (!rdev->ops->flush_pmksa)
9804 return -EOPNOTSUPP;
9805
9806 return rdev_flush_pmksa(rdev, dev);
9807}
9808
9809static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9810{
9811 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9812 struct net_device *dev = info->user_ptr[1];
9813 u8 action_code, dialog_token;
9814 u32 peer_capability = 0;
9815 u16 status_code;
9816 u8 *peer;
9817 bool initiator;
9818
9819 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9820 !rdev->ops->tdls_mgmt)
9821 return -EOPNOTSUPP;
9822
9823 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9824 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9825 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9826 !info->attrs[NL80211_ATTR_IE] ||
9827 !info->attrs[NL80211_ATTR_MAC])
9828 return -EINVAL;
9829
9830 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9831 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9832 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9833 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9834 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9835 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9836 peer_capability =
9837 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9838
9839 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9840 dialog_token, status_code, peer_capability,
9841 initiator,
9842 nla_data(info->attrs[NL80211_ATTR_IE]),
9843 nla_len(info->attrs[NL80211_ATTR_IE]));
9844}
9845
9846static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9847{
9848 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9849 struct net_device *dev = info->user_ptr[1];
9850 enum nl80211_tdls_operation operation;
9851 u8 *peer;
9852
9853 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9854 !rdev->ops->tdls_oper)
9855 return -EOPNOTSUPP;
9856
9857 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9858 !info->attrs[NL80211_ATTR_MAC])
9859 return -EINVAL;
9860
9861 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9862 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9863
9864 return rdev_tdls_oper(rdev, dev, peer, operation);
9865}
9866
9867static int nl80211_remain_on_channel(struct sk_buff *skb,
9868 struct genl_info *info)
9869{
9870 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9871 struct wireless_dev *wdev = info->user_ptr[1];
9872 struct cfg80211_chan_def chandef;
9873 const struct cfg80211_chan_def *compat_chandef;
9874 struct sk_buff *msg;
9875 void *hdr;
9876 u64 cookie;
9877 u32 duration;
9878 int err;
9879
9880 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9881 !info->attrs[NL80211_ATTR_DURATION])
9882 return -EINVAL;
9883
9884 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9885
9886 if (!rdev->ops->remain_on_channel ||
9887 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9888 return -EOPNOTSUPP;
9889
9890 /*
9891 * We should be on that channel for at least a minimum amount of
9892 * time (10ms) but no longer than the driver supports.
9893 */
9894 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9895 duration > rdev->wiphy.max_remain_on_channel_duration)
9896 return -EINVAL;
9897
9898 err = nl80211_parse_chandef(rdev, info, &chandef);
9899 if (err)
9900 return err;
9901
9902 wdev_lock(wdev);
9903 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9904 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9905 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9906 &chandef);
9907 if (compat_chandef != &chandef) {
9908 wdev_unlock(wdev);
9909 return -EBUSY;
9910 }
9911 }
9912 wdev_unlock(wdev);
9913
9914 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9915 if (!msg)
9916 return -ENOMEM;
9917
9918 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9919 NL80211_CMD_REMAIN_ON_CHANNEL);
9920 if (!hdr) {
9921 err = -ENOBUFS;
9922 goto free_msg;
9923 }
9924
9925 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9926 duration, &cookie);
9927
9928 if (err)
9929 goto free_msg;
9930
9931 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9932 NL80211_ATTR_PAD))
9933 goto nla_put_failure;
9934
9935 genlmsg_end(msg, hdr);
9936
9937 return genlmsg_reply(msg, info);
9938
9939 nla_put_failure:
9940 err = -ENOBUFS;
9941 free_msg:
9942 nlmsg_free(msg);
9943 return err;
9944}
9945
9946static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9947 struct genl_info *info)
9948{
9949 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9950 struct wireless_dev *wdev = info->user_ptr[1];
9951 u64 cookie;
9952
9953 if (!info->attrs[NL80211_ATTR_COOKIE])
9954 return -EINVAL;
9955
9956 if (!rdev->ops->cancel_remain_on_channel)
9957 return -EOPNOTSUPP;
9958
9959 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9960
9961 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9962}
9963
9964static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9965 struct genl_info *info)
9966{
9967 struct cfg80211_bitrate_mask mask;
9968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9969 struct net_device *dev = info->user_ptr[1];
9970 int err;
9971
9972 if (!rdev->ops->set_bitrate_mask)
9973 return -EOPNOTSUPP;
9974
9975 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9976 if (err)
9977 return err;
9978
9979 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9980}
9981
9982static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9983{
9984 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9985 struct wireless_dev *wdev = info->user_ptr[1];
9986 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9987
9988 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9989 return -EINVAL;
9990
9991 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9992 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9993
9994 switch (wdev->iftype) {
9995 case NL80211_IFTYPE_STATION:
9996 case NL80211_IFTYPE_ADHOC:
9997 case NL80211_IFTYPE_P2P_CLIENT:
9998 case NL80211_IFTYPE_AP:
9999 case NL80211_IFTYPE_AP_VLAN:
10000 case NL80211_IFTYPE_MESH_POINT:
10001 case NL80211_IFTYPE_P2P_GO:
10002 case NL80211_IFTYPE_P2P_DEVICE:
10003 break;
10004 case NL80211_IFTYPE_NAN:
10005 default:
10006 return -EOPNOTSUPP;
10007 }
10008
10009 /* not much point in registering if we can't reply */
10010 if (!rdev->ops->mgmt_tx)
10011 return -EOPNOTSUPP;
10012
10013 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10014 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10015 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10016}
10017
10018static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10019{
10020 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10021 struct wireless_dev *wdev = info->user_ptr[1];
10022 struct cfg80211_chan_def chandef;
10023 int err;
10024 void *hdr = NULL;
10025 u64 cookie;
10026 struct sk_buff *msg = NULL;
10027 struct cfg80211_mgmt_tx_params params = {
10028 .dont_wait_for_ack =
10029 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10030 };
10031
10032 if (!info->attrs[NL80211_ATTR_FRAME])
10033 return -EINVAL;
10034
10035 if (!rdev->ops->mgmt_tx)
10036 return -EOPNOTSUPP;
10037
10038 switch (wdev->iftype) {
10039 case NL80211_IFTYPE_P2P_DEVICE:
10040 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10041 return -EINVAL;
10042 case NL80211_IFTYPE_STATION:
10043 case NL80211_IFTYPE_ADHOC:
10044 case NL80211_IFTYPE_P2P_CLIENT:
10045 case NL80211_IFTYPE_AP:
10046 case NL80211_IFTYPE_AP_VLAN:
10047 case NL80211_IFTYPE_MESH_POINT:
10048 case NL80211_IFTYPE_P2P_GO:
10049 break;
10050 case NL80211_IFTYPE_NAN:
10051 default:
10052 return -EOPNOTSUPP;
10053 }
10054
10055 if (info->attrs[NL80211_ATTR_DURATION]) {
10056 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10057 return -EINVAL;
10058 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10059
10060 /*
10061 * We should wait on the channel for at least a minimum amount
10062 * of time (10ms) but no longer than the driver supports.
10063 */
10064 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10065 params.wait > rdev->wiphy.max_remain_on_channel_duration)
10066 return -EINVAL;
10067 }
10068
10069 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10070
10071 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10072 return -EINVAL;
10073
10074 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10075
10076 /* get the channel if any has been specified, otherwise pass NULL to
10077 * the driver. The latter will use the current one
10078 */
10079 chandef.chan = NULL;
10080 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10081 err = nl80211_parse_chandef(rdev, info, &chandef);
10082 if (err)
10083 return err;
10084 }
10085
10086 if (!chandef.chan && params.offchan)
10087 return -EINVAL;
10088
10089 wdev_lock(wdev);
10090 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10091 wdev_unlock(wdev);
10092 return -EBUSY;
10093 }
10094 wdev_unlock(wdev);
10095
10096 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10097 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10098
10099 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10100 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10101 int i;
10102
10103 if (len % sizeof(u16))
10104 return -EINVAL;
10105
10106 params.n_csa_offsets = len / sizeof(u16);
10107 params.csa_offsets =
10108 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10109
10110 /* check that all the offsets fit the frame */
10111 for (i = 0; i < params.n_csa_offsets; i++) {
10112 if (params.csa_offsets[i] >= params.len)
10113 return -EINVAL;
10114 }
10115 }
10116
10117 if (!params.dont_wait_for_ack) {
10118 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10119 if (!msg)
10120 return -ENOMEM;
10121
10122 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10123 NL80211_CMD_FRAME);
10124 if (!hdr) {
10125 err = -ENOBUFS;
10126 goto free_msg;
10127 }
10128 }
10129
10130 params.chan = chandef.chan;
10131 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10132 if (err)
10133 goto free_msg;
10134
10135 if (msg) {
10136 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10137 NL80211_ATTR_PAD))
10138 goto nla_put_failure;
10139
10140 genlmsg_end(msg, hdr);
10141 return genlmsg_reply(msg, info);
10142 }
10143
10144 return 0;
10145
10146 nla_put_failure:
10147 err = -ENOBUFS;
10148 free_msg:
10149 nlmsg_free(msg);
10150 return err;
10151}
10152
10153static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10154{
10155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10156 struct wireless_dev *wdev = info->user_ptr[1];
10157 u64 cookie;
10158
10159 if (!info->attrs[NL80211_ATTR_COOKIE])
10160 return -EINVAL;
10161
10162 if (!rdev->ops->mgmt_tx_cancel_wait)
10163 return -EOPNOTSUPP;
10164
10165 switch (wdev->iftype) {
10166 case NL80211_IFTYPE_STATION:
10167 case NL80211_IFTYPE_ADHOC:
10168 case NL80211_IFTYPE_P2P_CLIENT:
10169 case NL80211_IFTYPE_AP:
10170 case NL80211_IFTYPE_AP_VLAN:
10171 case NL80211_IFTYPE_P2P_GO:
10172 case NL80211_IFTYPE_P2P_DEVICE:
10173 break;
10174 case NL80211_IFTYPE_NAN:
10175 default:
10176 return -EOPNOTSUPP;
10177 }
10178
10179 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10180
10181 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10182}
10183
10184static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10185{
10186 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10187 struct wireless_dev *wdev;
10188 struct net_device *dev = info->user_ptr[1];
10189 u8 ps_state;
10190 bool state;
10191 int err;
10192
10193 if (!info->attrs[NL80211_ATTR_PS_STATE])
10194 return -EINVAL;
10195
10196 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10197
10198 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
10199 return -EINVAL;
10200
10201 wdev = dev->ieee80211_ptr;
10202
10203 if (!rdev->ops->set_power_mgmt)
10204 return -EOPNOTSUPP;
10205
10206 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10207
10208 if (state == wdev->ps)
10209 return 0;
10210
10211 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10212 if (!err)
10213 wdev->ps = state;
10214 return err;
10215}
10216
10217static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10218{
10219 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10220 enum nl80211_ps_state ps_state;
10221 struct wireless_dev *wdev;
10222 struct net_device *dev = info->user_ptr[1];
10223 struct sk_buff *msg;
10224 void *hdr;
10225 int err;
10226
10227 wdev = dev->ieee80211_ptr;
10228
10229 if (!rdev->ops->set_power_mgmt)
10230 return -EOPNOTSUPP;
10231
10232 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10233 if (!msg)
10234 return -ENOMEM;
10235
10236 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10237 NL80211_CMD_GET_POWER_SAVE);
10238 if (!hdr) {
10239 err = -ENOBUFS;
10240 goto free_msg;
10241 }
10242
10243 if (wdev->ps)
10244 ps_state = NL80211_PS_ENABLED;
10245 else
10246 ps_state = NL80211_PS_DISABLED;
10247
10248 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10249 goto nla_put_failure;
10250
10251 genlmsg_end(msg, hdr);
10252 return genlmsg_reply(msg, info);
10253
10254 nla_put_failure:
10255 err = -ENOBUFS;
10256 free_msg:
10257 nlmsg_free(msg);
10258 return err;
10259}
10260
10261static const struct nla_policy
10262nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10263 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10264 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10265 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10266 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10267 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10268 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10269 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10270};
10271
10272static int nl80211_set_cqm_txe(struct genl_info *info,
10273 u32 rate, u32 pkts, u32 intvl)
10274{
10275 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10276 struct net_device *dev = info->user_ptr[1];
10277 struct wireless_dev *wdev = dev->ieee80211_ptr;
10278
10279 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10280 return -EINVAL;
10281
10282 if (!rdev->ops->set_cqm_txe_config)
10283 return -EOPNOTSUPP;
10284
10285 if (wdev->iftype != NL80211_IFTYPE_STATION &&
10286 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10287 return -EOPNOTSUPP;
10288
10289 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10290}
10291
10292static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10293 struct net_device *dev)
10294{
10295 struct wireless_dev *wdev = dev->ieee80211_ptr;
10296 s32 last, low, high;
10297 u32 hyst;
10298 int i, n, low_index;
10299 int err;
10300
10301 /* RSSI reporting disabled? */
10302 if (!wdev->cqm_config)
10303 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10304
10305 /*
10306 * Obtain current RSSI value if possible, if not and no RSSI threshold
10307 * event has been received yet, we should receive an event after a
10308 * connection is established and enough beacons received to calculate
10309 * the average.
10310 */
10311 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10312 rdev->ops->get_station) {
10313 struct station_info sinfo = {};
10314 u8 *mac_addr;
10315
10316 mac_addr = wdev->current_bss->pub.bssid;
10317
10318 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10319 if (err)
10320 return err;
10321
10322 cfg80211_sinfo_release_content(&sinfo);
10323 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10324 wdev->cqm_config->last_rssi_event_value =
10325 (s8) sinfo.rx_beacon_signal_avg;
10326 }
10327
10328 last = wdev->cqm_config->last_rssi_event_value;
10329 hyst = wdev->cqm_config->rssi_hyst;
10330 n = wdev->cqm_config->n_rssi_thresholds;
10331
10332 for (i = 0; i < n; i++) {
10333 i = array_index_nospec(i, n);
10334 if (last < wdev->cqm_config->rssi_thresholds[i])
10335 break;
10336 }
10337
10338 low_index = i - 1;
10339 if (low_index >= 0) {
10340 low_index = array_index_nospec(low_index, n);
10341 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10342 } else {
10343 low = S32_MIN;
10344 }
10345 if (i < n) {
10346 i = array_index_nospec(i, n);
10347 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10348 } else {
10349 high = S32_MAX;
10350 }
10351
10352 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10353}
10354
10355static int nl80211_set_cqm_rssi(struct genl_info *info,
10356 const s32 *thresholds, int n_thresholds,
10357 u32 hysteresis)
10358{
10359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10360 struct net_device *dev = info->user_ptr[1];
10361 struct wireless_dev *wdev = dev->ieee80211_ptr;
10362 int i, err;
10363 s32 prev = S32_MIN;
10364
10365 /* Check all values negative and sorted */
10366 for (i = 0; i < n_thresholds; i++) {
10367 if (thresholds[i] > 0 || thresholds[i] <= prev)
10368 return -EINVAL;
10369
10370 prev = thresholds[i];
10371 }
10372
10373 if (wdev->iftype != NL80211_IFTYPE_STATION &&
10374 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10375 return -EOPNOTSUPP;
10376
10377 wdev_lock(wdev);
10378 cfg80211_cqm_config_free(wdev);
10379 wdev_unlock(wdev);
10380
10381 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10382 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10383 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10384
10385 return rdev_set_cqm_rssi_config(rdev, dev,
10386 thresholds[0], hysteresis);
10387 }
10388
10389 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10390 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10391 return -EOPNOTSUPP;
10392
10393 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10394 n_thresholds = 0;
10395
10396 wdev_lock(wdev);
10397 if (n_thresholds) {
10398 struct cfg80211_cqm_config *cqm_config;
10399
10400 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10401 n_thresholds * sizeof(s32), GFP_KERNEL);
10402 if (!cqm_config) {
10403 err = -ENOMEM;
10404 goto unlock;
10405 }
10406
10407 cqm_config->rssi_hyst = hysteresis;
10408 cqm_config->n_rssi_thresholds = n_thresholds;
10409 memcpy(cqm_config->rssi_thresholds, thresholds,
10410 n_thresholds * sizeof(s32));
10411
10412 wdev->cqm_config = cqm_config;
10413 }
10414
10415 err = cfg80211_cqm_rssi_update(rdev, dev);
10416
10417unlock:
10418 wdev_unlock(wdev);
10419
10420 return err;
10421}
10422
10423static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10424{
10425 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10426 struct nlattr *cqm;
10427 int err;
10428
10429 cqm = info->attrs[NL80211_ATTR_CQM];
10430 if (!cqm)
10431 return -EINVAL;
10432
10433 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
10434 nl80211_attr_cqm_policy, info->extack);
10435 if (err)
10436 return err;
10437
10438 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10439 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10440 const s32 *thresholds =
10441 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10442 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10443 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10444
10445 if (len % 4)
10446 return -EINVAL;
10447
10448 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10449 hysteresis);
10450 }
10451
10452 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10453 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10454 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10455 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10456 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10457 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10458
10459 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10460 }
10461
10462 return -EINVAL;
10463}
10464
10465static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10466{
10467 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10468 struct net_device *dev = info->user_ptr[1];
10469 struct ocb_setup setup = {};
10470 int err;
10471
10472 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10473 if (err)
10474 return err;
10475
10476 return cfg80211_join_ocb(rdev, dev, &setup);
10477}
10478
10479static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10480{
10481 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10482 struct net_device *dev = info->user_ptr[1];
10483
10484 return cfg80211_leave_ocb(rdev, dev);
10485}
10486
10487static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10488{
10489 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10490 struct net_device *dev = info->user_ptr[1];
10491 struct mesh_config cfg;
10492 struct mesh_setup setup;
10493 int err;
10494
10495 /* start with default */
10496 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10497 memcpy(&setup, &default_mesh_setup, sizeof(setup));
10498
10499 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10500 /* and parse parameters if given */
10501 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10502 if (err)
10503 return err;
10504 }
10505
10506 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10507 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10508 return -EINVAL;
10509
10510 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10511 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10512
10513 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10514 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10515 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10516 return -EINVAL;
10517
10518 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10519 setup.beacon_interval =
10520 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10521
10522 err = cfg80211_validate_beacon_int(rdev,
10523 NL80211_IFTYPE_MESH_POINT,
10524 setup.beacon_interval);
10525 if (err)
10526 return err;
10527 }
10528
10529 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10530 setup.dtim_period =
10531 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10532 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10533 return -EINVAL;
10534 }
10535
10536 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10537 /* parse additional setup parameters if given */
10538 err = nl80211_parse_mesh_setup(info, &setup);
10539 if (err)
10540 return err;
10541 }
10542
10543 if (setup.user_mpm)
10544 cfg.auto_open_plinks = false;
10545
10546 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10547 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10548 if (err)
10549 return err;
10550 } else {
10551 /* __cfg80211_join_mesh() will sort it out */
10552 setup.chandef.chan = NULL;
10553 }
10554
10555 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10556 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10557 int n_rates =
10558 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10559 struct ieee80211_supported_band *sband;
10560
10561 if (!setup.chandef.chan)
10562 return -EINVAL;
10563
10564 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10565
10566 err = ieee80211_get_ratemask(sband, rates, n_rates,
10567 &setup.basic_rates);
10568 if (err)
10569 return err;
10570 }
10571
10572 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10573 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10574 if (err)
10575 return err;
10576
10577 if (!setup.chandef.chan)
10578 return -EINVAL;
10579
10580 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10581 &setup.beacon_rate);
10582 if (err)
10583 return err;
10584 }
10585
10586 setup.userspace_handles_dfs =
10587 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10588
10589 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10590 int r = validate_pae_over_nl80211(rdev, info);
10591
10592 if (r < 0)
10593 return r;
10594
10595 setup.control_port_over_nl80211 = true;
10596 }
10597
10598 wdev_lock(dev->ieee80211_ptr);
10599 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10600 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
10601 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10602 wdev_unlock(dev->ieee80211_ptr);
10603
10604 return err;
10605}
10606
10607static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10608{
10609 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10610 struct net_device *dev = info->user_ptr[1];
10611
10612 return cfg80211_leave_mesh(rdev, dev);
10613}
10614
10615#ifdef CONFIG_PM
10616static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10617 struct cfg80211_registered_device *rdev)
10618{
10619 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10620 struct nlattr *nl_pats, *nl_pat;
10621 int i, pat_len;
10622
10623 if (!wowlan->n_patterns)
10624 return 0;
10625
10626 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10627 if (!nl_pats)
10628 return -ENOBUFS;
10629
10630 for (i = 0; i < wowlan->n_patterns; i++) {
10631 nl_pat = nla_nest_start(msg, i + 1);
10632 if (!nl_pat)
10633 return -ENOBUFS;
10634 pat_len = wowlan->patterns[i].pattern_len;
10635 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10636 wowlan->patterns[i].mask) ||
10637 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10638 wowlan->patterns[i].pattern) ||
10639 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10640 wowlan->patterns[i].pkt_offset))
10641 return -ENOBUFS;
10642 nla_nest_end(msg, nl_pat);
10643 }
10644 nla_nest_end(msg, nl_pats);
10645
10646 return 0;
10647}
10648
10649static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10650 struct cfg80211_wowlan_tcp *tcp)
10651{
10652 struct nlattr *nl_tcp;
10653
10654 if (!tcp)
10655 return 0;
10656
10657 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10658 if (!nl_tcp)
10659 return -ENOBUFS;
10660
10661 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10662 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10663 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10664 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10665 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10666 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10667 tcp->payload_len, tcp->payload) ||
10668 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10669 tcp->data_interval) ||
10670 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10671 tcp->wake_len, tcp->wake_data) ||
10672 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10673 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10674 return -ENOBUFS;
10675
10676 if (tcp->payload_seq.len &&
10677 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10678 sizeof(tcp->payload_seq), &tcp->payload_seq))
10679 return -ENOBUFS;
10680
10681 if (tcp->payload_tok.len &&
10682 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10683 sizeof(tcp->payload_tok) + tcp->tokens_size,
10684 &tcp->payload_tok))
10685 return -ENOBUFS;
10686
10687 nla_nest_end(msg, nl_tcp);
10688
10689 return 0;
10690}
10691
10692static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10693 struct cfg80211_sched_scan_request *req)
10694{
10695 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10696 int i;
10697
10698 if (!req)
10699 return 0;
10700
10701 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10702 if (!nd)
10703 return -ENOBUFS;
10704
10705 if (req->n_scan_plans == 1 &&
10706 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10707 req->scan_plans[0].interval * 1000))
10708 return -ENOBUFS;
10709
10710 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10711 return -ENOBUFS;
10712
10713 if (req->relative_rssi_set) {
10714 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10715
10716 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10717 req->relative_rssi))
10718 return -ENOBUFS;
10719
10720 rssi_adjust.band = req->rssi_adjust.band;
10721 rssi_adjust.delta = req->rssi_adjust.delta;
10722 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10723 sizeof(rssi_adjust), &rssi_adjust))
10724 return -ENOBUFS;
10725 }
10726
10727 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10728 if (!freqs)
10729 return -ENOBUFS;
10730
10731 for (i = 0; i < req->n_channels; i++) {
10732 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10733 return -ENOBUFS;
10734 }
10735
10736 nla_nest_end(msg, freqs);
10737
10738 if (req->n_match_sets) {
10739 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10740 if (!matches)
10741 return -ENOBUFS;
10742
10743 for (i = 0; i < req->n_match_sets; i++) {
10744 match = nla_nest_start(msg, i);
10745 if (!match)
10746 return -ENOBUFS;
10747
10748 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10749 req->match_sets[i].ssid.ssid_len,
10750 req->match_sets[i].ssid.ssid))
10751 return -ENOBUFS;
10752 nla_nest_end(msg, match);
10753 }
10754 nla_nest_end(msg, matches);
10755 }
10756
10757 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10758 if (!scan_plans)
10759 return -ENOBUFS;
10760
10761 for (i = 0; i < req->n_scan_plans; i++) {
10762 scan_plan = nla_nest_start(msg, i + 1);
10763 if (!scan_plan)
10764 return -ENOBUFS;
10765
10766 if (!scan_plan ||
10767 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10768 req->scan_plans[i].interval) ||
10769 (req->scan_plans[i].iterations &&
10770 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10771 req->scan_plans[i].iterations)))
10772 return -ENOBUFS;
10773 nla_nest_end(msg, scan_plan);
10774 }
10775 nla_nest_end(msg, scan_plans);
10776
10777 nla_nest_end(msg, nd);
10778
10779 return 0;
10780}
10781
10782static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10783{
10784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10785 struct sk_buff *msg;
10786 void *hdr;
10787 u32 size = NLMSG_DEFAULT_SIZE;
10788
10789 if (!rdev->wiphy.wowlan)
10790 return -EOPNOTSUPP;
10791
10792 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10793 /* adjust size to have room for all the data */
10794 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10795 rdev->wiphy.wowlan_config->tcp->payload_len +
10796 rdev->wiphy.wowlan_config->tcp->wake_len +
10797 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10798 }
10799
10800 msg = nlmsg_new(size, GFP_KERNEL);
10801 if (!msg)
10802 return -ENOMEM;
10803
10804 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10805 NL80211_CMD_GET_WOWLAN);
10806 if (!hdr)
10807 goto nla_put_failure;
10808
10809 if (rdev->wiphy.wowlan_config) {
10810 struct nlattr *nl_wowlan;
10811
10812 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10813 if (!nl_wowlan)
10814 goto nla_put_failure;
10815
10816 if ((rdev->wiphy.wowlan_config->any &&
10817 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10818 (rdev->wiphy.wowlan_config->disconnect &&
10819 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10820 (rdev->wiphy.wowlan_config->magic_pkt &&
10821 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10822 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10823 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10824 (rdev->wiphy.wowlan_config->eap_identity_req &&
10825 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10826 (rdev->wiphy.wowlan_config->four_way_handshake &&
10827 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10828 (rdev->wiphy.wowlan_config->rfkill_release &&
10829 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10830 goto nla_put_failure;
10831
10832 if (nl80211_send_wowlan_patterns(msg, rdev))
10833 goto nla_put_failure;
10834
10835 if (nl80211_send_wowlan_tcp(msg,
10836 rdev->wiphy.wowlan_config->tcp))
10837 goto nla_put_failure;
10838
10839 if (nl80211_send_wowlan_nd(
10840 msg,
10841 rdev->wiphy.wowlan_config->nd_config))
10842 goto nla_put_failure;
10843
10844 nla_nest_end(msg, nl_wowlan);
10845 }
10846
10847 genlmsg_end(msg, hdr);
10848 return genlmsg_reply(msg, info);
10849
10850nla_put_failure:
10851 nlmsg_free(msg);
10852 return -ENOBUFS;
10853}
10854
10855static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10856 struct nlattr *attr,
10857 struct cfg80211_wowlan *trig)
10858{
10859 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10860 struct cfg80211_wowlan_tcp *cfg;
10861 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10862 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10863 u32 size;
10864 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10865 int err, port;
10866
10867 if (!rdev->wiphy.wowlan->tcp)
10868 return -EINVAL;
10869
10870 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10871 nl80211_wowlan_tcp_policy, NULL);
10872 if (err)
10873 return err;
10874
10875 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10876 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10877 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10878 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10879 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10880 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10881 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10882 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10883 return -EINVAL;
10884
10885 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10886 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10887 return -EINVAL;
10888
10889 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10890 rdev->wiphy.wowlan->tcp->data_interval_max ||
10891 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10892 return -EINVAL;
10893
10894 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10895 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10896 return -EINVAL;
10897
10898 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10899 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10900 return -EINVAL;
10901
10902 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10903 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10904
10905 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10906 tokens_size = tokln - sizeof(*tok);
10907
10908 if (!tok->len || tokens_size % tok->len)
10909 return -EINVAL;
10910 if (!rdev->wiphy.wowlan->tcp->tok)
10911 return -EINVAL;
10912 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10913 return -EINVAL;
10914 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10915 return -EINVAL;
10916 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10917 return -EINVAL;
10918 if (tok->offset + tok->len > data_size)
10919 return -EINVAL;
10920 }
10921
10922 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10923 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10924 if (!rdev->wiphy.wowlan->tcp->seq)
10925 return -EINVAL;
10926 if (seq->len == 0 || seq->len > 4)
10927 return -EINVAL;
10928 if (seq->len + seq->offset > data_size)
10929 return -EINVAL;
10930 }
10931
10932 size = sizeof(*cfg);
10933 size += data_size;
10934 size += wake_size + wake_mask_size;
10935 size += tokens_size;
10936
10937 cfg = kzalloc(size, GFP_KERNEL);
10938 if (!cfg)
10939 return -ENOMEM;
10940 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10941 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10942 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10943 ETH_ALEN);
10944 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10945 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10946 else
10947 port = 0;
10948#ifdef CONFIG_INET
10949 /* allocate a socket and port for it and use it */
10950 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10951 IPPROTO_TCP, &cfg->sock, 1);
10952 if (err) {
10953 kfree(cfg);
10954 return err;
10955 }
10956 if (inet_csk_get_port(cfg->sock->sk, port)) {
10957 sock_release(cfg->sock);
10958 kfree(cfg);
10959 return -EADDRINUSE;
10960 }
10961 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10962#else
10963 if (!port) {
10964 kfree(cfg);
10965 return -EINVAL;
10966 }
10967 cfg->src_port = port;
10968#endif
10969
10970 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10971 cfg->payload_len = data_size;
10972 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10973 memcpy((void *)cfg->payload,
10974 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10975 data_size);
10976 if (seq)
10977 cfg->payload_seq = *seq;
10978 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10979 cfg->wake_len = wake_size;
10980 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10981 memcpy((void *)cfg->wake_data,
10982 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10983 wake_size);
10984 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10985 data_size + wake_size;
10986 memcpy((void *)cfg->wake_mask,
10987 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10988 wake_mask_size);
10989 if (tok) {
10990 cfg->tokens_size = tokens_size;
10991 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10992 }
10993
10994 trig->tcp = cfg;
10995
10996 return 0;
10997}
10998
10999static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11000 const struct wiphy_wowlan_support *wowlan,
11001 struct nlattr *attr,
11002 struct cfg80211_wowlan *trig)
11003{
11004 struct nlattr **tb;
11005 int err;
11006
11007 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11008 if (!tb)
11009 return -ENOMEM;
11010
11011 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11012 err = -EOPNOTSUPP;
11013 goto out;
11014 }
11015
11016 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
11017 NULL);
11018 if (err)
11019 goto out;
11020
11021 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11022 wowlan->max_nd_match_sets);
11023 err = PTR_ERR_OR_ZERO(trig->nd_config);
11024 if (err)
11025 trig->nd_config = NULL;
11026
11027out:
11028 kfree(tb);
11029 return err;
11030}
11031
11032static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11033{
11034 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11035 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11036 struct cfg80211_wowlan new_triggers = {};
11037 struct cfg80211_wowlan *ntrig;
11038 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11039 int err, i;
11040 bool prev_enabled = rdev->wiphy.wowlan_config;
11041 bool regular = false;
11042
11043 if (!wowlan)
11044 return -EOPNOTSUPP;
11045
11046 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11047 cfg80211_rdev_free_wowlan(rdev);
11048 rdev->wiphy.wowlan_config = NULL;
11049 goto set_wakeup;
11050 }
11051
11052 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
11053 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11054 nl80211_wowlan_policy, info->extack);
11055 if (err)
11056 return err;
11057
11058 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11059 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11060 return -EINVAL;
11061 new_triggers.any = true;
11062 }
11063
11064 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11065 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11066 return -EINVAL;
11067 new_triggers.disconnect = true;
11068 regular = true;
11069 }
11070
11071 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11072 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11073 return -EINVAL;
11074 new_triggers.magic_pkt = true;
11075 regular = true;
11076 }
11077
11078 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11079 return -EINVAL;
11080
11081 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11082 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11083 return -EINVAL;
11084 new_triggers.gtk_rekey_failure = true;
11085 regular = true;
11086 }
11087
11088 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11089 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11090 return -EINVAL;
11091 new_triggers.eap_identity_req = true;
11092 regular = true;
11093 }
11094
11095 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11096 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11097 return -EINVAL;
11098 new_triggers.four_way_handshake = true;
11099 regular = true;
11100 }
11101
11102 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11103 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11104 return -EINVAL;
11105 new_triggers.rfkill_release = true;
11106 regular = true;
11107 }
11108
11109 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11110 struct nlattr *pat;
11111 int n_patterns = 0;
11112 int rem, pat_len, mask_len, pkt_offset;
11113 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11114
11115 regular = true;
11116
11117 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11118 rem)
11119 n_patterns++;
11120 if (n_patterns > wowlan->n_patterns)
11121 return -EINVAL;
11122
11123 new_triggers.patterns = kcalloc(n_patterns,
11124 sizeof(new_triggers.patterns[0]),
11125 GFP_KERNEL);
11126 if (!new_triggers.patterns)
11127 return -ENOMEM;
11128
11129 new_triggers.n_patterns = n_patterns;
11130 i = 0;
11131
11132 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11133 rem) {
11134 u8 *mask_pat;
11135
11136 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11137 nl80211_packet_pattern_policy,
11138 info->extack);
11139 if (err)
11140 goto error;
11141
11142 err = -EINVAL;
11143 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11144 !pat_tb[NL80211_PKTPAT_PATTERN])
11145 goto error;
11146 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11147 mask_len = DIV_ROUND_UP(pat_len, 8);
11148 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11149 goto error;
11150 if (pat_len > wowlan->pattern_max_len ||
11151 pat_len < wowlan->pattern_min_len)
11152 goto error;
11153
11154 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11155 pkt_offset = 0;
11156 else
11157 pkt_offset = nla_get_u32(
11158 pat_tb[NL80211_PKTPAT_OFFSET]);
11159 if (pkt_offset > wowlan->max_pkt_offset)
11160 goto error;
11161 new_triggers.patterns[i].pkt_offset = pkt_offset;
11162
11163 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11164 if (!mask_pat) {
11165 err = -ENOMEM;
11166 goto error;
11167 }
11168 new_triggers.patterns[i].mask = mask_pat;
11169 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11170 mask_len);
11171 mask_pat += mask_len;
11172 new_triggers.patterns[i].pattern = mask_pat;
11173 new_triggers.patterns[i].pattern_len = pat_len;
11174 memcpy(mask_pat,
11175 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11176 pat_len);
11177 i++;
11178 }
11179 }
11180
11181 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11182 regular = true;
11183 err = nl80211_parse_wowlan_tcp(
11184 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11185 &new_triggers);
11186 if (err)
11187 goto error;
11188 }
11189
11190 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11191 regular = true;
11192 err = nl80211_parse_wowlan_nd(
11193 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11194 &new_triggers);
11195 if (err)
11196 goto error;
11197 }
11198
11199 /* The 'any' trigger means the device continues operating more or less
11200 * as in its normal operation mode and wakes up the host on most of the
11201 * normal interrupts (like packet RX, ...)
11202 * It therefore makes little sense to combine with the more constrained
11203 * wakeup trigger modes.
11204 */
11205 if (new_triggers.any && regular) {
11206 err = -EINVAL;
11207 goto error;
11208 }
11209
11210 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11211 if (!ntrig) {
11212 err = -ENOMEM;
11213 goto error;
11214 }
11215 cfg80211_rdev_free_wowlan(rdev);
11216 rdev->wiphy.wowlan_config = ntrig;
11217
11218 set_wakeup:
11219 if (rdev->ops->set_wakeup &&
11220 prev_enabled != !!rdev->wiphy.wowlan_config)
11221 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11222
11223 return 0;
11224 error:
11225 for (i = 0; i < new_triggers.n_patterns; i++)
11226 kfree(new_triggers.patterns[i].mask);
11227 kfree(new_triggers.patterns);
11228 if (new_triggers.tcp && new_triggers.tcp->sock)
11229 sock_release(new_triggers.tcp->sock);
11230 kfree(new_triggers.tcp);
11231 kfree(new_triggers.nd_config);
11232 return err;
11233}
11234#endif
11235
11236static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11237 struct cfg80211_registered_device *rdev)
11238{
11239 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11240 int i, j, pat_len;
11241 struct cfg80211_coalesce_rules *rule;
11242
11243 if (!rdev->coalesce->n_rules)
11244 return 0;
11245
11246 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
11247 if (!nl_rules)
11248 return -ENOBUFS;
11249
11250 for (i = 0; i < rdev->coalesce->n_rules; i++) {
11251 nl_rule = nla_nest_start(msg, i + 1);
11252 if (!nl_rule)
11253 return -ENOBUFS;
11254
11255 rule = &rdev->coalesce->rules[i];
11256 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11257 rule->delay))
11258 return -ENOBUFS;
11259
11260 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11261 rule->condition))
11262 return -ENOBUFS;
11263
11264 nl_pats = nla_nest_start(msg,
11265 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11266 if (!nl_pats)
11267 return -ENOBUFS;
11268
11269 for (j = 0; j < rule->n_patterns; j++) {
11270 nl_pat = nla_nest_start(msg, j + 1);
11271 if (!nl_pat)
11272 return -ENOBUFS;
11273 pat_len = rule->patterns[j].pattern_len;
11274 if (nla_put(msg, NL80211_PKTPAT_MASK,
11275 DIV_ROUND_UP(pat_len, 8),
11276 rule->patterns[j].mask) ||
11277 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11278 rule->patterns[j].pattern) ||
11279 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11280 rule->patterns[j].pkt_offset))
11281 return -ENOBUFS;
11282 nla_nest_end(msg, nl_pat);
11283 }
11284 nla_nest_end(msg, nl_pats);
11285 nla_nest_end(msg, nl_rule);
11286 }
11287 nla_nest_end(msg, nl_rules);
11288
11289 return 0;
11290}
11291
11292static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11293{
11294 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11295 struct sk_buff *msg;
11296 void *hdr;
11297
11298 if (!rdev->wiphy.coalesce)
11299 return -EOPNOTSUPP;
11300
11301 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11302 if (!msg)
11303 return -ENOMEM;
11304
11305 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11306 NL80211_CMD_GET_COALESCE);
11307 if (!hdr)
11308 goto nla_put_failure;
11309
11310 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11311 goto nla_put_failure;
11312
11313 genlmsg_end(msg, hdr);
11314 return genlmsg_reply(msg, info);
11315
11316nla_put_failure:
11317 nlmsg_free(msg);
11318 return -ENOBUFS;
11319}
11320
11321void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11322{
11323 struct cfg80211_coalesce *coalesce = rdev->coalesce;
11324 int i, j;
11325 struct cfg80211_coalesce_rules *rule;
11326
11327 if (!coalesce)
11328 return;
11329
11330 for (i = 0; i < coalesce->n_rules; i++) {
11331 rule = &coalesce->rules[i];
11332 for (j = 0; j < rule->n_patterns; j++)
11333 kfree(rule->patterns[j].mask);
11334 kfree(rule->patterns);
11335 }
11336 kfree(coalesce->rules);
11337 kfree(coalesce);
11338 rdev->coalesce = NULL;
11339}
11340
11341static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11342 struct nlattr *rule,
11343 struct cfg80211_coalesce_rules *new_rule)
11344{
11345 int err, i;
11346 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11347 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11348 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11349 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11350
11351 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
11352 nl80211_coalesce_policy, NULL);
11353 if (err)
11354 return err;
11355
11356 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11357 new_rule->delay =
11358 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11359 if (new_rule->delay > coalesce->max_delay)
11360 return -EINVAL;
11361
11362 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11363 new_rule->condition =
11364 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11365 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
11366 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
11367 return -EINVAL;
11368
11369 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11370 return -EINVAL;
11371
11372 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11373 rem)
11374 n_patterns++;
11375 if (n_patterns > coalesce->n_patterns)
11376 return -EINVAL;
11377
11378 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11379 GFP_KERNEL);
11380 if (!new_rule->patterns)
11381 return -ENOMEM;
11382
11383 new_rule->n_patterns = n_patterns;
11384 i = 0;
11385
11386 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11387 rem) {
11388 u8 *mask_pat;
11389
11390 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11391 nl80211_packet_pattern_policy, NULL);
11392 if (err)
11393 return err;
11394
11395 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11396 !pat_tb[NL80211_PKTPAT_PATTERN])
11397 return -EINVAL;
11398 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11399 mask_len = DIV_ROUND_UP(pat_len, 8);
11400 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11401 return -EINVAL;
11402 if (pat_len > coalesce->pattern_max_len ||
11403 pat_len < coalesce->pattern_min_len)
11404 return -EINVAL;
11405
11406 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11407 pkt_offset = 0;
11408 else
11409 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11410 if (pkt_offset > coalesce->max_pkt_offset)
11411 return -EINVAL;
11412 new_rule->patterns[i].pkt_offset = pkt_offset;
11413
11414 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11415 if (!mask_pat)
11416 return -ENOMEM;
11417
11418 new_rule->patterns[i].mask = mask_pat;
11419 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11420 mask_len);
11421
11422 mask_pat += mask_len;
11423 new_rule->patterns[i].pattern = mask_pat;
11424 new_rule->patterns[i].pattern_len = pat_len;
11425 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11426 pat_len);
11427 i++;
11428 }
11429
11430 return 0;
11431}
11432
11433static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11434{
11435 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11436 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11437 struct cfg80211_coalesce new_coalesce = {};
11438 struct cfg80211_coalesce *n_coalesce;
11439 int err, rem_rule, n_rules = 0, i, j;
11440 struct nlattr *rule;
11441 struct cfg80211_coalesce_rules *tmp_rule;
11442
11443 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11444 return -EOPNOTSUPP;
11445
11446 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11447 cfg80211_rdev_free_coalesce(rdev);
11448 rdev_set_coalesce(rdev, NULL);
11449 return 0;
11450 }
11451
11452 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11453 rem_rule)
11454 n_rules++;
11455 if (n_rules > coalesce->n_rules)
11456 return -EINVAL;
11457
11458 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11459 GFP_KERNEL);
11460 if (!new_coalesce.rules)
11461 return -ENOMEM;
11462
11463 new_coalesce.n_rules = n_rules;
11464 i = 0;
11465
11466 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11467 rem_rule) {
11468 err = nl80211_parse_coalesce_rule(rdev, rule,
11469 &new_coalesce.rules[i]);
11470 if (err)
11471 goto error;
11472
11473 i++;
11474 }
11475
11476 err = rdev_set_coalesce(rdev, &new_coalesce);
11477 if (err)
11478 goto error;
11479
11480 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11481 if (!n_coalesce) {
11482 err = -ENOMEM;
11483 goto error;
11484 }
11485 cfg80211_rdev_free_coalesce(rdev);
11486 rdev->coalesce = n_coalesce;
11487
11488 return 0;
11489error:
11490 for (i = 0; i < new_coalesce.n_rules; i++) {
11491 tmp_rule = &new_coalesce.rules[i];
11492 for (j = 0; j < tmp_rule->n_patterns; j++)
11493 kfree(tmp_rule->patterns[j].mask);
11494 kfree(tmp_rule->patterns);
11495 }
11496 kfree(new_coalesce.rules);
11497
11498 return err;
11499}
11500
11501static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11502{
11503 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11504 struct net_device *dev = info->user_ptr[1];
11505 struct wireless_dev *wdev = dev->ieee80211_ptr;
11506 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11507 struct cfg80211_gtk_rekey_data rekey_data;
11508 int err;
11509
11510 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11511 return -EINVAL;
11512
11513 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
11514 info->attrs[NL80211_ATTR_REKEY_DATA],
11515 nl80211_rekey_policy, info->extack);
11516 if (err)
11517 return err;
11518
11519 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11520 !tb[NL80211_REKEY_DATA_KCK])
11521 return -EINVAL;
11522 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11523 return -ERANGE;
11524 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11525 return -ERANGE;
11526 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11527 return -ERANGE;
11528
11529 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11530 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11531 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11532
11533 wdev_lock(wdev);
11534 if (!wdev->current_bss) {
11535 err = -ENOTCONN;
11536 goto out;
11537 }
11538
11539 if (!rdev->ops->set_rekey_data) {
11540 err = -EOPNOTSUPP;
11541 goto out;
11542 }
11543
11544 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11545 out:
11546 wdev_unlock(wdev);
11547 return err;
11548}
11549
11550static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11551 struct genl_info *info)
11552{
11553 struct net_device *dev = info->user_ptr[1];
11554 struct wireless_dev *wdev = dev->ieee80211_ptr;
11555
11556 if (wdev->iftype != NL80211_IFTYPE_AP &&
11557 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11558 return -EINVAL;
11559
11560 if (wdev->ap_unexpected_nlportid)
11561 return -EBUSY;
11562
11563 wdev->ap_unexpected_nlportid = info->snd_portid;
11564 return 0;
11565}
11566
11567static int nl80211_probe_client(struct sk_buff *skb,
11568 struct genl_info *info)
11569{
11570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11571 struct net_device *dev = info->user_ptr[1];
11572 struct wireless_dev *wdev = dev->ieee80211_ptr;
11573 struct sk_buff *msg;
11574 void *hdr;
11575 const u8 *addr;
11576 u64 cookie;
11577 int err;
11578
11579 if (wdev->iftype != NL80211_IFTYPE_AP &&
11580 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11581 return -EOPNOTSUPP;
11582
11583 if (!info->attrs[NL80211_ATTR_MAC])
11584 return -EINVAL;
11585
11586 if (!rdev->ops->probe_client)
11587 return -EOPNOTSUPP;
11588
11589 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11590 if (!msg)
11591 return -ENOMEM;
11592
11593 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11594 NL80211_CMD_PROBE_CLIENT);
11595 if (!hdr) {
11596 err = -ENOBUFS;
11597 goto free_msg;
11598 }
11599
11600 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11601
11602 err = rdev_probe_client(rdev, dev, addr, &cookie);
11603 if (err)
11604 goto free_msg;
11605
11606 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11607 NL80211_ATTR_PAD))
11608 goto nla_put_failure;
11609
11610 genlmsg_end(msg, hdr);
11611
11612 return genlmsg_reply(msg, info);
11613
11614 nla_put_failure:
11615 err = -ENOBUFS;
11616 free_msg:
11617 nlmsg_free(msg);
11618 return err;
11619}
11620
11621static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11622{
11623 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11624 struct cfg80211_beacon_registration *reg, *nreg;
11625 int rv;
11626
11627 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11628 return -EOPNOTSUPP;
11629
11630 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11631 if (!nreg)
11632 return -ENOMEM;
11633
11634 /* First, check if already registered. */
11635 spin_lock_bh(&rdev->beacon_registrations_lock);
11636 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11637 if (reg->nlportid == info->snd_portid) {
11638 rv = -EALREADY;
11639 goto out_err;
11640 }
11641 }
11642 /* Add it to the list */
11643 nreg->nlportid = info->snd_portid;
11644 list_add(&nreg->list, &rdev->beacon_registrations);
11645
11646 spin_unlock_bh(&rdev->beacon_registrations_lock);
11647
11648 return 0;
11649out_err:
11650 spin_unlock_bh(&rdev->beacon_registrations_lock);
11651 kfree(nreg);
11652 return rv;
11653}
11654
11655static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11656{
11657 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11658 struct wireless_dev *wdev = info->user_ptr[1];
11659 int err;
11660
11661 if (!rdev->ops->start_p2p_device)
11662 return -EOPNOTSUPP;
11663
11664 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11665 return -EOPNOTSUPP;
11666
11667 if (wdev_running(wdev))
11668 return 0;
11669
11670 if (rfkill_blocked(rdev->rfkill))
11671 return -ERFKILL;
11672
11673 err = rdev_start_p2p_device(rdev, wdev);
11674 if (err)
11675 return err;
11676
11677 wdev->is_running = true;
11678 rdev->opencount++;
11679
11680 return 0;
11681}
11682
11683static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11684{
11685 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11686 struct wireless_dev *wdev = info->user_ptr[1];
11687
11688 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11689 return -EOPNOTSUPP;
11690
11691 if (!rdev->ops->stop_p2p_device)
11692 return -EOPNOTSUPP;
11693
11694 cfg80211_stop_p2p_device(rdev, wdev);
11695
11696 return 0;
11697}
11698
11699static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11700{
11701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11702 struct wireless_dev *wdev = info->user_ptr[1];
11703 struct cfg80211_nan_conf conf = {};
11704 int err;
11705
11706 if (wdev->iftype != NL80211_IFTYPE_NAN)
11707 return -EOPNOTSUPP;
11708
11709 if (wdev_running(wdev))
11710 return -EEXIST;
11711
11712 if (rfkill_blocked(rdev->rfkill))
11713 return -ERFKILL;
11714
11715 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11716 return -EINVAL;
11717
11718 conf.master_pref =
11719 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11720 if (!conf.master_pref)
11721 return -EINVAL;
11722
11723 if (info->attrs[NL80211_ATTR_BANDS]) {
11724 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11725
11726 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11727 return -EOPNOTSUPP;
11728
11729 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11730 return -EINVAL;
11731
11732 conf.bands = bands;
11733 }
11734
11735 err = rdev_start_nan(rdev, wdev, &conf);
11736 if (err)
11737 return err;
11738
11739 wdev->is_running = true;
11740 rdev->opencount++;
11741
11742 return 0;
11743}
11744
11745static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11746{
11747 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11748 struct wireless_dev *wdev = info->user_ptr[1];
11749
11750 if (wdev->iftype != NL80211_IFTYPE_NAN)
11751 return -EOPNOTSUPP;
11752
11753 cfg80211_stop_nan(rdev, wdev);
11754
11755 return 0;
11756}
11757
11758static int validate_nan_filter(struct nlattr *filter_attr)
11759{
11760 struct nlattr *attr;
11761 int len = 0, n_entries = 0, rem;
11762
11763 nla_for_each_nested(attr, filter_attr, rem) {
11764 len += nla_len(attr);
11765 n_entries++;
11766 }
11767
11768 if (len >= U8_MAX)
11769 return -EINVAL;
11770
11771 return n_entries;
11772}
11773
11774static int handle_nan_filter(struct nlattr *attr_filter,
11775 struct cfg80211_nan_func *func,
11776 bool tx)
11777{
11778 struct nlattr *attr;
11779 int n_entries, rem, i;
11780 struct cfg80211_nan_func_filter *filter;
11781
11782 n_entries = validate_nan_filter(attr_filter);
11783 if (n_entries < 0)
11784 return n_entries;
11785
11786 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11787
11788 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11789 if (!filter)
11790 return -ENOMEM;
11791
11792 i = 0;
11793 nla_for_each_nested(attr, attr_filter, rem) {
11794 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11795 filter[i].len = nla_len(attr);
11796 i++;
11797 }
11798 if (tx) {
11799 func->num_tx_filters = n_entries;
11800 func->tx_filters = filter;
11801 } else {
11802 func->num_rx_filters = n_entries;
11803 func->rx_filters = filter;
11804 }
11805
11806 return 0;
11807}
11808
11809static int nl80211_nan_add_func(struct sk_buff *skb,
11810 struct genl_info *info)
11811{
11812 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11813 struct wireless_dev *wdev = info->user_ptr[1];
11814 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11815 struct cfg80211_nan_func *func;
11816 struct sk_buff *msg = NULL;
11817 void *hdr = NULL;
11818 int err = 0;
11819
11820 if (wdev->iftype != NL80211_IFTYPE_NAN)
11821 return -EOPNOTSUPP;
11822
11823 if (!wdev_running(wdev))
11824 return -ENOTCONN;
11825
11826 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11827 return -EINVAL;
11828
11829 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11830 info->attrs[NL80211_ATTR_NAN_FUNC],
11831 nl80211_nan_func_policy, info->extack);
11832 if (err)
11833 return err;
11834
11835 func = kzalloc(sizeof(*func), GFP_KERNEL);
11836 if (!func)
11837 return -ENOMEM;
11838
11839 func->cookie = wdev->wiphy->cookie_counter++;
11840
11841 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11842 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11843 err = -EINVAL;
11844 goto out;
11845 }
11846
11847
11848 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11849
11850 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11851 err = -EINVAL;
11852 goto out;
11853 }
11854
11855 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11856 sizeof(func->service_id));
11857
11858 func->close_range =
11859 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11860
11861 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11862 func->serv_spec_info_len =
11863 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11864 func->serv_spec_info =
11865 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11866 func->serv_spec_info_len,
11867 GFP_KERNEL);
11868 if (!func->serv_spec_info) {
11869 err = -ENOMEM;
11870 goto out;
11871 }
11872 }
11873
11874 if (tb[NL80211_NAN_FUNC_TTL])
11875 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11876
11877 switch (func->type) {
11878 case NL80211_NAN_FUNC_PUBLISH:
11879 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11880 err = -EINVAL;
11881 goto out;
11882 }
11883
11884 func->publish_type =
11885 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11886 func->publish_bcast =
11887 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11888
11889 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11890 func->publish_bcast) {
11891 err = -EINVAL;
11892 goto out;
11893 }
11894 break;
11895 case NL80211_NAN_FUNC_SUBSCRIBE:
11896 func->subscribe_active =
11897 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11898 break;
11899 case NL80211_NAN_FUNC_FOLLOW_UP:
11900 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11901 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11902 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11903 err = -EINVAL;
11904 goto out;
11905 }
11906
11907 func->followup_id =
11908 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11909 func->followup_reqid =
11910 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11911 memcpy(func->followup_dest.addr,
11912 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11913 sizeof(func->followup_dest.addr));
11914 if (func->ttl) {
11915 err = -EINVAL;
11916 goto out;
11917 }
11918 break;
11919 default:
11920 err = -EINVAL;
11921 goto out;
11922 }
11923
11924 if (tb[NL80211_NAN_FUNC_SRF]) {
11925 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11926
11927 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11928 tb[NL80211_NAN_FUNC_SRF],
11929 nl80211_nan_srf_policy, info->extack);
11930 if (err)
11931 goto out;
11932
11933 func->srf_include =
11934 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11935
11936 if (srf_tb[NL80211_NAN_SRF_BF]) {
11937 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11938 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11939 err = -EINVAL;
11940 goto out;
11941 }
11942
11943 func->srf_bf_len =
11944 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11945 func->srf_bf =
11946 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11947 func->srf_bf_len, GFP_KERNEL);
11948 if (!func->srf_bf) {
11949 err = -ENOMEM;
11950 goto out;
11951 }
11952
11953 func->srf_bf_idx =
11954 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11955 } else {
11956 struct nlattr *attr, *mac_attr =
11957 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11958 int n_entries, rem, i = 0;
11959
11960 if (!mac_attr) {
11961 err = -EINVAL;
11962 goto out;
11963 }
11964
11965 n_entries = validate_acl_mac_addrs(mac_attr);
11966 if (n_entries <= 0) {
11967 err = -EINVAL;
11968 goto out;
11969 }
11970
11971 func->srf_num_macs = n_entries;
11972 func->srf_macs =
11973 kcalloc(n_entries, sizeof(*func->srf_macs),
11974 GFP_KERNEL);
11975 if (!func->srf_macs) {
11976 err = -ENOMEM;
11977 goto out;
11978 }
11979
11980 nla_for_each_nested(attr, mac_attr, rem)
11981 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11982 sizeof(*func->srf_macs));
11983 }
11984 }
11985
11986 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11987 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11988 func, true);
11989 if (err)
11990 goto out;
11991 }
11992
11993 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11994 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11995 func, false);
11996 if (err)
11997 goto out;
11998 }
11999
12000 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12001 if (!msg) {
12002 err = -ENOMEM;
12003 goto out;
12004 }
12005
12006 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12007 NL80211_CMD_ADD_NAN_FUNCTION);
12008 /* This can't really happen - we just allocated 4KB */
12009 if (WARN_ON(!hdr)) {
12010 err = -ENOMEM;
12011 goto out;
12012 }
12013
12014 err = rdev_add_nan_func(rdev, wdev, func);
12015out:
12016 if (err < 0) {
12017 cfg80211_free_nan_func(func);
12018 nlmsg_free(msg);
12019 return err;
12020 }
12021
12022 /* propagate the instance id and cookie to userspace */
12023 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12024 NL80211_ATTR_PAD))
12025 goto nla_put_failure;
12026
12027 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
12028 if (!func_attr)
12029 goto nla_put_failure;
12030
12031 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12032 func->instance_id))
12033 goto nla_put_failure;
12034
12035 nla_nest_end(msg, func_attr);
12036
12037 genlmsg_end(msg, hdr);
12038 return genlmsg_reply(msg, info);
12039
12040nla_put_failure:
12041 nlmsg_free(msg);
12042 return -ENOBUFS;
12043}
12044
12045static int nl80211_nan_del_func(struct sk_buff *skb,
12046 struct genl_info *info)
12047{
12048 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12049 struct wireless_dev *wdev = info->user_ptr[1];
12050 u64 cookie;
12051
12052 if (wdev->iftype != NL80211_IFTYPE_NAN)
12053 return -EOPNOTSUPP;
12054
12055 if (!wdev_running(wdev))
12056 return -ENOTCONN;
12057
12058 if (!info->attrs[NL80211_ATTR_COOKIE])
12059 return -EINVAL;
12060
12061 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12062
12063 rdev_del_nan_func(rdev, wdev, cookie);
12064
12065 return 0;
12066}
12067
12068static int nl80211_nan_change_config(struct sk_buff *skb,
12069 struct genl_info *info)
12070{
12071 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12072 struct wireless_dev *wdev = info->user_ptr[1];
12073 struct cfg80211_nan_conf conf = {};
12074 u32 changed = 0;
12075
12076 if (wdev->iftype != NL80211_IFTYPE_NAN)
12077 return -EOPNOTSUPP;
12078
12079 if (!wdev_running(wdev))
12080 return -ENOTCONN;
12081
12082 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12083 conf.master_pref =
12084 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12085 if (conf.master_pref <= 1 || conf.master_pref == 255)
12086 return -EINVAL;
12087
12088 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12089 }
12090
12091 if (info->attrs[NL80211_ATTR_BANDS]) {
12092 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12093
12094 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12095 return -EOPNOTSUPP;
12096
12097 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12098 return -EINVAL;
12099
12100 conf.bands = bands;
12101 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12102 }
12103
12104 if (!changed)
12105 return -EINVAL;
12106
12107 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12108}
12109
12110void cfg80211_nan_match(struct wireless_dev *wdev,
12111 struct cfg80211_nan_match_params *match, gfp_t gfp)
12112{
12113 struct wiphy *wiphy = wdev->wiphy;
12114 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12115 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12116 struct sk_buff *msg;
12117 void *hdr;
12118
12119 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12120 return;
12121
12122 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12123 if (!msg)
12124 return;
12125
12126 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12127 if (!hdr) {
12128 nlmsg_free(msg);
12129 return;
12130 }
12131
12132 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12133 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12134 wdev->netdev->ifindex)) ||
12135 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12136 NL80211_ATTR_PAD))
12137 goto nla_put_failure;
12138
12139 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12140 NL80211_ATTR_PAD) ||
12141 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12142 goto nla_put_failure;
12143
12144 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
12145 if (!match_attr)
12146 goto nla_put_failure;
12147
12148 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
12149 if (!local_func_attr)
12150 goto nla_put_failure;
12151
12152 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12153 goto nla_put_failure;
12154
12155 nla_nest_end(msg, local_func_attr);
12156
12157 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
12158 if (!peer_func_attr)
12159 goto nla_put_failure;
12160
12161 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12162 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12163 goto nla_put_failure;
12164
12165 if (match->info && match->info_len &&
12166 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12167 match->info))
12168 goto nla_put_failure;
12169
12170 nla_nest_end(msg, peer_func_attr);
12171 nla_nest_end(msg, match_attr);
12172 genlmsg_end(msg, hdr);
12173
12174 if (!wdev->owner_nlportid)
12175 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12176 msg, 0, NL80211_MCGRP_NAN, gfp);
12177 else
12178 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12179 wdev->owner_nlportid);
12180
12181 return;
12182
12183nla_put_failure:
12184 nlmsg_free(msg);
12185}
12186EXPORT_SYMBOL(cfg80211_nan_match);
12187
12188void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12189 u8 inst_id,
12190 enum nl80211_nan_func_term_reason reason,
12191 u64 cookie, gfp_t gfp)
12192{
12193 struct wiphy *wiphy = wdev->wiphy;
12194 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12195 struct sk_buff *msg;
12196 struct nlattr *func_attr;
12197 void *hdr;
12198
12199 if (WARN_ON(!inst_id))
12200 return;
12201
12202 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12203 if (!msg)
12204 return;
12205
12206 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12207 if (!hdr) {
12208 nlmsg_free(msg);
12209 return;
12210 }
12211
12212 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12213 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12214 wdev->netdev->ifindex)) ||
12215 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12216 NL80211_ATTR_PAD))
12217 goto nla_put_failure;
12218
12219 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12220 NL80211_ATTR_PAD))
12221 goto nla_put_failure;
12222
12223 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
12224 if (!func_attr)
12225 goto nla_put_failure;
12226
12227 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12228 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12229 goto nla_put_failure;
12230
12231 nla_nest_end(msg, func_attr);
12232 genlmsg_end(msg, hdr);
12233
12234 if (!wdev->owner_nlportid)
12235 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12236 msg, 0, NL80211_MCGRP_NAN, gfp);
12237 else
12238 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12239 wdev->owner_nlportid);
12240
12241 return;
12242
12243nla_put_failure:
12244 nlmsg_free(msg);
12245}
12246EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12247
12248static int nl80211_get_protocol_features(struct sk_buff *skb,
12249 struct genl_info *info)
12250{
12251 void *hdr;
12252 struct sk_buff *msg;
12253
12254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12255 if (!msg)
12256 return -ENOMEM;
12257
12258 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12259 NL80211_CMD_GET_PROTOCOL_FEATURES);
12260 if (!hdr)
12261 goto nla_put_failure;
12262
12263 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12264 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12265 goto nla_put_failure;
12266
12267 genlmsg_end(msg, hdr);
12268 return genlmsg_reply(msg, info);
12269
12270 nla_put_failure:
12271 kfree_skb(msg);
12272 return -ENOBUFS;
12273}
12274
12275static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12276{
12277 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12278 struct cfg80211_update_ft_ies_params ft_params;
12279 struct net_device *dev = info->user_ptr[1];
12280
12281 if (!rdev->ops->update_ft_ies)
12282 return -EOPNOTSUPP;
12283
12284 if (!info->attrs[NL80211_ATTR_MDID] ||
12285 !info->attrs[NL80211_ATTR_IE] ||
12286 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
12287 return -EINVAL;
12288
12289 memset(&ft_params, 0, sizeof(ft_params));
12290 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12291 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12292 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12293
12294 return rdev_update_ft_ies(rdev, dev, &ft_params);
12295}
12296
12297static int nl80211_crit_protocol_start(struct sk_buff *skb,
12298 struct genl_info *info)
12299{
12300 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12301 struct wireless_dev *wdev = info->user_ptr[1];
12302 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12303 u16 duration;
12304 int ret;
12305
12306 if (!rdev->ops->crit_proto_start)
12307 return -EOPNOTSUPP;
12308
12309 if (WARN_ON(!rdev->ops->crit_proto_stop))
12310 return -EINVAL;
12311
12312 if (rdev->crit_proto_nlportid)
12313 return -EBUSY;
12314
12315 /* determine protocol if provided */
12316 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12317 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12318
12319 if (proto >= NUM_NL80211_CRIT_PROTO)
12320 return -EINVAL;
12321
12322 /* timeout must be provided */
12323 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12324 return -EINVAL;
12325
12326 duration =
12327 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12328
12329 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12330 return -ERANGE;
12331
12332 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12333 if (!ret)
12334 rdev->crit_proto_nlportid = info->snd_portid;
12335
12336 return ret;
12337}
12338
12339static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12340 struct genl_info *info)
12341{
12342 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12343 struct wireless_dev *wdev = info->user_ptr[1];
12344
12345 if (!rdev->ops->crit_proto_stop)
12346 return -EOPNOTSUPP;
12347
12348 if (rdev->crit_proto_nlportid) {
12349 rdev->crit_proto_nlportid = 0;
12350 rdev_crit_proto_stop(rdev, wdev);
12351 }
12352 return 0;
12353}
12354
12355static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12356{
12357 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12358 struct wireless_dev *wdev =
12359 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12360 int i, err;
12361 u32 vid, subcmd;
12362
12363 if (!rdev->wiphy.vendor_commands)
12364 return -EOPNOTSUPP;
12365
12366 if (IS_ERR(wdev)) {
12367 err = PTR_ERR(wdev);
12368 if (err != -EINVAL)
12369 return err;
12370 wdev = NULL;
12371 } else if (wdev->wiphy != &rdev->wiphy) {
12372 return -EINVAL;
12373 }
12374
12375 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12376 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12377 return -EINVAL;
12378
12379 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12380 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12381 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12382 const struct wiphy_vendor_command *vcmd;
12383 void *data = NULL;
12384 int len = 0;
12385
12386 vcmd = &rdev->wiphy.vendor_commands[i];
12387
12388 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12389 continue;
12390
12391 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12392 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12393 if (!wdev)
12394 return -EINVAL;
12395 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12396 !wdev->netdev)
12397 return -EINVAL;
12398
12399 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12400 if (!wdev_running(wdev))
12401 return -ENETDOWN;
12402 }
12403
12404 if (!vcmd->doit)
12405 return -EOPNOTSUPP;
12406 } else {
12407 wdev = NULL;
12408 }
12409
12410 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12411 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12412 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12413 }
12414
12415 rdev->cur_cmd_info = info;
12416 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
12417 data, len);
12418 rdev->cur_cmd_info = NULL;
12419 return err;
12420 }
12421
12422 return -EOPNOTSUPP;
12423}
12424
12425static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12426 struct netlink_callback *cb,
12427 struct cfg80211_registered_device **rdev,
12428 struct wireless_dev **wdev)
12429{
12430 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
12431 u32 vid, subcmd;
12432 unsigned int i;
12433 int vcmd_idx = -1;
12434 int err;
12435 void *data = NULL;
12436 unsigned int data_len = 0;
12437
12438 if (cb->args[0]) {
12439 /* subtract the 1 again here */
12440 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12441 struct wireless_dev *tmp;
12442
12443 if (!wiphy)
12444 return -ENODEV;
12445 *rdev = wiphy_to_rdev(wiphy);
12446 *wdev = NULL;
12447
12448 if (cb->args[1]) {
12449 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12450 if (tmp->identifier == cb->args[1] - 1) {
12451 *wdev = tmp;
12452 break;
12453 }
12454 }
12455 }
12456
12457 /* keep rtnl locked in successful case */
12458 return 0;
12459 }
12460
12461 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
12462 nl80211_fam.maxattr, nl80211_policy, NULL);
12463 if (err)
12464 return err;
12465
12466 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12467 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
12468 return -EINVAL;
12469
12470 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12471 if (IS_ERR(*wdev))
12472 *wdev = NULL;
12473
12474 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12475 if (IS_ERR(*rdev))
12476 return PTR_ERR(*rdev);
12477
12478 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12479 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12480
12481 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12482 const struct wiphy_vendor_command *vcmd;
12483
12484 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12485
12486 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12487 continue;
12488
12489 if (!vcmd->dumpit)
12490 return -EOPNOTSUPP;
12491
12492 vcmd_idx = i;
12493 break;
12494 }
12495
12496 if (vcmd_idx < 0)
12497 return -EOPNOTSUPP;
12498
12499 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12500 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12501 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12502 }
12503
12504 /* 0 is the first index - add 1 to parse only once */
12505 cb->args[0] = (*rdev)->wiphy_idx + 1;
12506 /* add 1 to know if it was NULL */
12507 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12508 cb->args[2] = vcmd_idx;
12509 cb->args[3] = (unsigned long)data;
12510 cb->args[4] = data_len;
12511
12512 /* keep rtnl locked in successful case */
12513 return 0;
12514}
12515
12516static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12517 struct netlink_callback *cb)
12518{
12519 struct cfg80211_registered_device *rdev;
12520 struct wireless_dev *wdev;
12521 unsigned int vcmd_idx;
12522 const struct wiphy_vendor_command *vcmd;
12523 void *data;
12524 int data_len;
12525 int err;
12526 struct nlattr *vendor_data;
12527
12528 rtnl_lock();
12529 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12530 if (err)
12531 goto out;
12532
12533 vcmd_idx = cb->args[2];
12534 data = (void *)cb->args[3];
12535 data_len = cb->args[4];
12536 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12537
12538 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12539 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12540 if (!wdev) {
12541 err = -EINVAL;
12542 goto out;
12543 }
12544 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12545 !wdev->netdev) {
12546 err = -EINVAL;
12547 goto out;
12548 }
12549
12550 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12551 if (!wdev_running(wdev)) {
12552 err = -ENETDOWN;
12553 goto out;
12554 }
12555 }
12556 }
12557
12558 while (1) {
12559 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12560 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12561 NL80211_CMD_VENDOR);
12562 if (!hdr)
12563 break;
12564
12565 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12566 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12567 wdev_id(wdev),
12568 NL80211_ATTR_PAD))) {
12569 genlmsg_cancel(skb, hdr);
12570 break;
12571 }
12572
12573 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12574 if (!vendor_data) {
12575 genlmsg_cancel(skb, hdr);
12576 break;
12577 }
12578
12579 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12580 (unsigned long *)&cb->args[5]);
12581 nla_nest_end(skb, vendor_data);
12582
12583 if (err == -ENOBUFS || err == -ENOENT) {
12584 genlmsg_cancel(skb, hdr);
12585 break;
12586 } else if (err) {
12587 genlmsg_cancel(skb, hdr);
12588 goto out;
12589 }
12590
12591 genlmsg_end(skb, hdr);
12592 }
12593
12594 err = skb->len;
12595 out:
12596 rtnl_unlock();
12597 return err;
12598}
12599
12600struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12601 enum nl80211_commands cmd,
12602 enum nl80211_attrs attr,
12603 int approxlen)
12604{
12605 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12606
12607 if (WARN_ON(!rdev->cur_cmd_info))
12608 return NULL;
12609
12610 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12611 rdev->cur_cmd_info->snd_portid,
12612 rdev->cur_cmd_info->snd_seq,
12613 cmd, attr, NULL, GFP_KERNEL);
12614}
12615EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12616
12617int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12618{
12619 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12620 void *hdr = ((void **)skb->cb)[1];
12621 struct nlattr *data = ((void **)skb->cb)[2];
12622
12623 /* clear CB data for netlink core to own from now on */
12624 memset(skb->cb, 0, sizeof(skb->cb));
12625
12626 if (WARN_ON(!rdev->cur_cmd_info)) {
12627 kfree_skb(skb);
12628 return -EINVAL;
12629 }
12630
12631 nla_nest_end(skb, data);
12632 genlmsg_end(skb, hdr);
12633 return genlmsg_reply(skb, rdev->cur_cmd_info);
12634}
12635EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12636
12637static int nl80211_set_qos_map(struct sk_buff *skb,
12638 struct genl_info *info)
12639{
12640 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12641 struct cfg80211_qos_map *qos_map = NULL;
12642 struct net_device *dev = info->user_ptr[1];
12643 u8 *pos, len, num_des, des_len, des;
12644 int ret;
12645
12646 if (!rdev->ops->set_qos_map)
12647 return -EOPNOTSUPP;
12648
12649 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12650 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12651 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12652
12653 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12654 len > IEEE80211_QOS_MAP_LEN_MAX)
12655 return -EINVAL;
12656
12657 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12658 if (!qos_map)
12659 return -ENOMEM;
12660
12661 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12662 if (num_des) {
12663 des_len = num_des *
12664 sizeof(struct cfg80211_dscp_exception);
12665 memcpy(qos_map->dscp_exception, pos, des_len);
12666 qos_map->num_des = num_des;
12667 for (des = 0; des < num_des; des++) {
12668 if (qos_map->dscp_exception[des].up > 7) {
12669 kfree(qos_map);
12670 return -EINVAL;
12671 }
12672 }
12673 pos += des_len;
12674 }
12675 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12676 }
12677
12678 wdev_lock(dev->ieee80211_ptr);
12679 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12680 if (!ret)
12681 ret = rdev_set_qos_map(rdev, dev, qos_map);
12682 wdev_unlock(dev->ieee80211_ptr);
12683
12684 kfree(qos_map);
12685 return ret;
12686}
12687
12688static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12689{
12690 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12691 struct net_device *dev = info->user_ptr[1];
12692 struct wireless_dev *wdev = dev->ieee80211_ptr;
12693 const u8 *peer;
12694 u8 tsid, up;
12695 u16 admitted_time = 0;
12696 int err;
12697
12698 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12699 return -EOPNOTSUPP;
12700
12701 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12702 !info->attrs[NL80211_ATTR_USER_PRIO])
12703 return -EINVAL;
12704
12705 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12706 if (tsid >= IEEE80211_NUM_TIDS)
12707 return -EINVAL;
12708
12709 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12710 if (up >= IEEE80211_NUM_UPS)
12711 return -EINVAL;
12712
12713 /* WMM uses TIDs 0-7 even for TSPEC */
12714 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12715 /* TODO: handle 802.11 TSPEC/admission control
12716 * need more attributes for that (e.g. BA session requirement);
12717 * change the WMM adminssion test above to allow both then
12718 */
12719 return -EINVAL;
12720 }
12721
12722 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12723
12724 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12725 admitted_time =
12726 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12727 if (!admitted_time)
12728 return -EINVAL;
12729 }
12730
12731 wdev_lock(wdev);
12732 switch (wdev->iftype) {
12733 case NL80211_IFTYPE_STATION:
12734 case NL80211_IFTYPE_P2P_CLIENT:
12735 if (wdev->current_bss)
12736 break;
12737 err = -ENOTCONN;
12738 goto out;
12739 default:
12740 err = -EOPNOTSUPP;
12741 goto out;
12742 }
12743
12744 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12745
12746 out:
12747 wdev_unlock(wdev);
12748 return err;
12749}
12750
12751static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12752{
12753 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12754 struct net_device *dev = info->user_ptr[1];
12755 struct wireless_dev *wdev = dev->ieee80211_ptr;
12756 const u8 *peer;
12757 u8 tsid;
12758 int err;
12759
12760 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12761 return -EINVAL;
12762
12763 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12764 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12765
12766 wdev_lock(wdev);
12767 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12768 wdev_unlock(wdev);
12769
12770 return err;
12771}
12772
12773static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12774 struct genl_info *info)
12775{
12776 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12777 struct net_device *dev = info->user_ptr[1];
12778 struct wireless_dev *wdev = dev->ieee80211_ptr;
12779 struct cfg80211_chan_def chandef = {};
12780 const u8 *addr;
12781 u8 oper_class;
12782 int err;
12783
12784 if (!rdev->ops->tdls_channel_switch ||
12785 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12786 return -EOPNOTSUPP;
12787
12788 switch (dev->ieee80211_ptr->iftype) {
12789 case NL80211_IFTYPE_STATION:
12790 case NL80211_IFTYPE_P2P_CLIENT:
12791 break;
12792 default:
12793 return -EOPNOTSUPP;
12794 }
12795
12796 if (!info->attrs[NL80211_ATTR_MAC] ||
12797 !info->attrs[NL80211_ATTR_OPER_CLASS])
12798 return -EINVAL;
12799
12800 err = nl80211_parse_chandef(rdev, info, &chandef);
12801 if (err)
12802 return err;
12803
12804 /*
12805 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12806 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12807 * specification is not defined for them.
12808 */
12809 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12810 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12811 chandef.width != NL80211_CHAN_WIDTH_20)
12812 return -EINVAL;
12813
12814 /* we will be active on the TDLS link */
12815 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12816 wdev->iftype))
12817 return -EINVAL;
12818
12819 /* don't allow switching to DFS channels */
12820 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12821 return -EINVAL;
12822
12823 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12824 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12825
12826 wdev_lock(wdev);
12827 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12828 wdev_unlock(wdev);
12829
12830 return err;
12831}
12832
12833static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12834 struct genl_info *info)
12835{
12836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12837 struct net_device *dev = info->user_ptr[1];
12838 struct wireless_dev *wdev = dev->ieee80211_ptr;
12839 const u8 *addr;
12840
12841 if (!rdev->ops->tdls_channel_switch ||
12842 !rdev->ops->tdls_cancel_channel_switch ||
12843 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12844 return -EOPNOTSUPP;
12845
12846 switch (dev->ieee80211_ptr->iftype) {
12847 case NL80211_IFTYPE_STATION:
12848 case NL80211_IFTYPE_P2P_CLIENT:
12849 break;
12850 default:
12851 return -EOPNOTSUPP;
12852 }
12853
12854 if (!info->attrs[NL80211_ATTR_MAC])
12855 return -EINVAL;
12856
12857 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12858
12859 wdev_lock(wdev);
12860 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12861 wdev_unlock(wdev);
12862
12863 return 0;
12864}
12865
12866static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12867 struct genl_info *info)
12868{
12869 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12870 struct net_device *dev = info->user_ptr[1];
12871 struct wireless_dev *wdev = dev->ieee80211_ptr;
12872 const struct nlattr *nla;
12873 bool enabled;
12874
12875 if (!rdev->ops->set_multicast_to_unicast)
12876 return -EOPNOTSUPP;
12877
12878 if (wdev->iftype != NL80211_IFTYPE_AP &&
12879 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12880 return -EOPNOTSUPP;
12881
12882 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12883 enabled = nla_get_flag(nla);
12884
12885 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12886}
12887
12888static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12889{
12890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12891 struct net_device *dev = info->user_ptr[1];
12892 struct wireless_dev *wdev = dev->ieee80211_ptr;
12893 struct cfg80211_pmk_conf pmk_conf = {};
12894 int ret;
12895
12896 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12897 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12898 return -EOPNOTSUPP;
12899
12900 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12901 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12902 return -EOPNOTSUPP;
12903
12904 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12905 return -EINVAL;
12906
12907 wdev_lock(wdev);
12908 if (!wdev->current_bss) {
12909 ret = -ENOTCONN;
12910 goto out;
12911 }
12912
12913 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12914 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12915 ret = -EINVAL;
12916 goto out;
12917 }
12918
12919 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12920 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12921 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12922 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12923 ret = -EINVAL;
12924 goto out;
12925 }
12926
12927 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12928 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12929
12930 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12931 ret = -EINVAL;
12932 goto out;
12933 }
12934
12935 pmk_conf.pmk_r0_name =
12936 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12937 }
12938
12939 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12940out:
12941 wdev_unlock(wdev);
12942 return ret;
12943}
12944
12945static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12946{
12947 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12948 struct net_device *dev = info->user_ptr[1];
12949 struct wireless_dev *wdev = dev->ieee80211_ptr;
12950 const u8 *aa;
12951 int ret;
12952
12953 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12954 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12955 return -EOPNOTSUPP;
12956
12957 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12958 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12959 return -EOPNOTSUPP;
12960
12961 if (!info->attrs[NL80211_ATTR_MAC])
12962 return -EINVAL;
12963
12964 wdev_lock(wdev);
12965 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12966 ret = rdev_del_pmk(rdev, dev, aa);
12967 wdev_unlock(wdev);
12968
12969 return ret;
12970}
12971
12972static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
12973{
12974 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12975 struct net_device *dev = info->user_ptr[1];
12976 struct cfg80211_external_auth_params params;
12977
12978 if (!rdev->ops->external_auth)
12979 return -EOPNOTSUPP;
12980
12981//tianyan@2021.7.27 modify for add wifi6 module start
12982 if (!info->attrs[NL80211_ATTR_SSID] &&
12983 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
12984 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
12985 return -EINVAL;
12986//tianyan@2021.7.27 modify for add wifi6 module end
12987
12988 if (!info->attrs[NL80211_ATTR_BSSID])
12989 return -EINVAL;
12990
12991 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
12992 return -EINVAL;
12993
12994 memset(&params, 0, sizeof(params));
12995
12996//tianyan@2021.7.27 modify for add wifi6 module start
12997 if (info->attrs[NL80211_ATTR_SSID]) {
12998 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12999 if (params.ssid.ssid_len == 0 ||
13000 params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13001 return -EINVAL;
13002 memcpy(params.ssid.ssid, nla_data(info->attrs[NL80211_ATTR_SSID]),
13003 params.ssid.ssid_len);
13004 }
13005//tianyan@2021.7.27 modify for add wifi6 module end
13006
13007 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13008 ETH_ALEN);
13009
13010 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13011
13012//tianyan@2021.7.27 modify for add wifi6 module start
13013 if (info->attrs[NL80211_ATTR_PMKID])
13014 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13015//tianyan@2021.7.27 modify for add wifi6 module start
13016
13017 return rdev_external_auth(rdev, dev, &params);
13018}
13019
13020static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13021{
13022 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13023 struct net_device *dev = info->user_ptr[1];
13024 struct wireless_dev *wdev = dev->ieee80211_ptr;
13025 const u8 *buf;
13026 size_t len;
13027 u8 *dest;
13028 u16 proto;
13029 bool noencrypt;
13030 int err;
13031
13032 if (!wiphy_ext_feature_isset(&rdev->wiphy,
13033 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13034 return -EOPNOTSUPP;
13035
13036 if (!rdev->ops->tx_control_port)
13037 return -EOPNOTSUPP;
13038
13039 if (!info->attrs[NL80211_ATTR_FRAME] ||
13040 !info->attrs[NL80211_ATTR_MAC] ||
13041 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13042 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13043 return -EINVAL;
13044 }
13045
13046 wdev_lock(wdev);
13047
13048 switch (wdev->iftype) {
13049 case NL80211_IFTYPE_AP:
13050 case NL80211_IFTYPE_P2P_GO:
13051 case NL80211_IFTYPE_MESH_POINT:
13052 break;
13053 case NL80211_IFTYPE_ADHOC:
13054 case NL80211_IFTYPE_STATION:
13055 case NL80211_IFTYPE_P2P_CLIENT:
13056 if (wdev->current_bss)
13057 break;
13058 err = -ENOTCONN;
13059 goto out;
13060 default:
13061 err = -EOPNOTSUPP;
13062 goto out;
13063 }
13064
13065 wdev_unlock(wdev);
13066
13067 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13068 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13069 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13070 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13071 noencrypt =
13072 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13073
13074 return rdev_tx_control_port(rdev, dev, buf, len,
13075 dest, cpu_to_be16(proto), noencrypt);
13076
13077 out:
13078 wdev_unlock(wdev);
13079 return err;
13080}
13081
13082#define NL80211_FLAG_NEED_WIPHY 0x01
13083#define NL80211_FLAG_NEED_NETDEV 0x02
13084#define NL80211_FLAG_NEED_RTNL 0x04
13085#define NL80211_FLAG_CHECK_NETDEV_UP 0x08
13086#define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
13087 NL80211_FLAG_CHECK_NETDEV_UP)
13088#define NL80211_FLAG_NEED_WDEV 0x10
13089/* If a netdev is associated, it must be UP, P2P must be started */
13090#define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
13091 NL80211_FLAG_CHECK_NETDEV_UP)
13092#define NL80211_FLAG_CLEAR_SKB 0x20
13093
13094static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13095 struct genl_info *info)
13096{
13097 struct cfg80211_registered_device *rdev;
13098 struct wireless_dev *wdev;
13099 struct net_device *dev;
13100 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13101
13102 if (rtnl)
13103 rtnl_lock();
13104
13105 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13106 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13107 if (IS_ERR(rdev)) {
13108 if (rtnl)
13109 rtnl_unlock();
13110 return PTR_ERR(rdev);
13111 }
13112 info->user_ptr[0] = rdev;
13113 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13114 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13115 ASSERT_RTNL();
13116
13117 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13118 info->attrs);
13119 if (IS_ERR(wdev)) {
13120 if (rtnl)
13121 rtnl_unlock();
13122 return PTR_ERR(wdev);
13123 }
13124
13125 dev = wdev->netdev;
13126 rdev = wiphy_to_rdev(wdev->wiphy);
13127
13128 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13129 if (!dev) {
13130 if (rtnl)
13131 rtnl_unlock();
13132 return -EINVAL;
13133 }
13134
13135 info->user_ptr[1] = dev;
13136 } else {
13137 info->user_ptr[1] = wdev;
13138 }
13139
13140 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13141 !wdev_running(wdev)) {
13142 if (rtnl)
13143 rtnl_unlock();
13144 return -ENETDOWN;
13145 }
13146
13147 if (dev)
13148 dev_hold(dev);
13149
13150 info->user_ptr[0] = rdev;
13151 }
13152
13153 return 0;
13154}
13155
13156static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13157 struct genl_info *info)
13158{
13159 if (info->user_ptr[1]) {
13160 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13161 struct wireless_dev *wdev = info->user_ptr[1];
13162
13163 if (wdev->netdev)
13164 dev_put(wdev->netdev);
13165 } else {
13166 dev_put(info->user_ptr[1]);
13167 }
13168 }
13169
13170 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13171 rtnl_unlock();
13172
13173 /* If needed, clear the netlink message payload from the SKB
13174 * as it might contain key data that shouldn't stick around on
13175 * the heap after the SKB is freed. The netlink message header
13176 * is still needed for further processing, so leave it intact.
13177 */
13178 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13179 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13180
13181 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13182 }
13183}
13184
13185static const struct genl_ops nl80211_ops[] = {
13186 {
13187 .cmd = NL80211_CMD_GET_WIPHY,
13188 .doit = nl80211_get_wiphy,
13189 .dumpit = nl80211_dump_wiphy,
13190 .done = nl80211_dump_wiphy_done,
13191 .policy = nl80211_policy,
13192 /* can be retrieved by unprivileged users */
13193 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13194 NL80211_FLAG_NEED_RTNL,
13195 },
13196 {
13197 .cmd = NL80211_CMD_SET_WIPHY,
13198 .doit = nl80211_set_wiphy,
13199 .policy = nl80211_policy,
13200 .flags = GENL_UNS_ADMIN_PERM,
13201 .internal_flags = NL80211_FLAG_NEED_RTNL,
13202 },
13203 {
13204 .cmd = NL80211_CMD_GET_INTERFACE,
13205 .doit = nl80211_get_interface,
13206 .dumpit = nl80211_dump_interface,
13207 .policy = nl80211_policy,
13208 /* can be retrieved by unprivileged users */
13209 .internal_flags = NL80211_FLAG_NEED_WDEV |
13210 NL80211_FLAG_NEED_RTNL,
13211 },
13212 {
13213 .cmd = NL80211_CMD_SET_INTERFACE,
13214 .doit = nl80211_set_interface,
13215 .policy = nl80211_policy,
13216 .flags = GENL_UNS_ADMIN_PERM,
13217 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13218 NL80211_FLAG_NEED_RTNL,
13219 },
13220 {
13221 .cmd = NL80211_CMD_NEW_INTERFACE,
13222 .doit = nl80211_new_interface,
13223 .policy = nl80211_policy,
13224 .flags = GENL_UNS_ADMIN_PERM,
13225 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13226 NL80211_FLAG_NEED_RTNL,
13227 },
13228 {
13229 .cmd = NL80211_CMD_DEL_INTERFACE,
13230 .doit = nl80211_del_interface,
13231 .policy = nl80211_policy,
13232 .flags = GENL_UNS_ADMIN_PERM,
13233 .internal_flags = NL80211_FLAG_NEED_WDEV |
13234 NL80211_FLAG_NEED_RTNL,
13235 },
13236 {
13237 .cmd = NL80211_CMD_GET_KEY,
13238 .doit = nl80211_get_key,
13239 .policy = nl80211_policy,
13240 .flags = GENL_UNS_ADMIN_PERM,
13241 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13242 NL80211_FLAG_NEED_RTNL,
13243 },
13244 {
13245 .cmd = NL80211_CMD_SET_KEY,
13246 .doit = nl80211_set_key,
13247 .policy = nl80211_policy,
13248 .flags = GENL_UNS_ADMIN_PERM,
13249 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13250 NL80211_FLAG_NEED_RTNL |
13251 NL80211_FLAG_CLEAR_SKB,
13252 },
13253 {
13254 .cmd = NL80211_CMD_NEW_KEY,
13255 .doit = nl80211_new_key,
13256 .policy = nl80211_policy,
13257 .flags = GENL_UNS_ADMIN_PERM,
13258 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13259 NL80211_FLAG_NEED_RTNL |
13260 NL80211_FLAG_CLEAR_SKB,
13261 },
13262 {
13263 .cmd = NL80211_CMD_DEL_KEY,
13264 .doit = nl80211_del_key,
13265 .policy = nl80211_policy,
13266 .flags = GENL_UNS_ADMIN_PERM,
13267 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13268 NL80211_FLAG_NEED_RTNL,
13269 },
13270 {
13271 .cmd = NL80211_CMD_SET_BEACON,
13272 .policy = nl80211_policy,
13273 .flags = GENL_UNS_ADMIN_PERM,
13274 .doit = nl80211_set_beacon,
13275 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13276 NL80211_FLAG_NEED_RTNL,
13277 },
13278 {
13279 .cmd = NL80211_CMD_START_AP,
13280 .policy = nl80211_policy,
13281 .flags = GENL_UNS_ADMIN_PERM,
13282 .doit = nl80211_start_ap,
13283 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13284 NL80211_FLAG_NEED_RTNL,
13285 },
13286 {
13287 .cmd = NL80211_CMD_STOP_AP,
13288 .policy = nl80211_policy,
13289 .flags = GENL_UNS_ADMIN_PERM,
13290 .doit = nl80211_stop_ap,
13291 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13292 NL80211_FLAG_NEED_RTNL,
13293 },
13294 {
13295 .cmd = NL80211_CMD_GET_STATION,
13296 .doit = nl80211_get_station,
13297 .dumpit = nl80211_dump_station,
13298 .policy = nl80211_policy,
13299 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13300 NL80211_FLAG_NEED_RTNL,
13301 },
13302 {
13303 .cmd = NL80211_CMD_SET_STATION,
13304 .doit = nl80211_set_station,
13305 .policy = nl80211_policy,
13306 .flags = GENL_UNS_ADMIN_PERM,
13307 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13308 NL80211_FLAG_NEED_RTNL,
13309 },
13310 {
13311 .cmd = NL80211_CMD_NEW_STATION,
13312 .doit = nl80211_new_station,
13313 .policy = nl80211_policy,
13314 .flags = GENL_UNS_ADMIN_PERM,
13315 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13316 NL80211_FLAG_NEED_RTNL,
13317 },
13318 {
13319 .cmd = NL80211_CMD_DEL_STATION,
13320 .doit = nl80211_del_station,
13321 .policy = nl80211_policy,
13322 .flags = GENL_UNS_ADMIN_PERM,
13323 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13324 NL80211_FLAG_NEED_RTNL,
13325 },
13326 {
13327 .cmd = NL80211_CMD_GET_MPATH,
13328 .doit = nl80211_get_mpath,
13329 .dumpit = nl80211_dump_mpath,
13330 .policy = nl80211_policy,
13331 .flags = GENL_UNS_ADMIN_PERM,
13332 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13333 NL80211_FLAG_NEED_RTNL,
13334 },
13335 {
13336 .cmd = NL80211_CMD_GET_MPP,
13337 .doit = nl80211_get_mpp,
13338 .dumpit = nl80211_dump_mpp,
13339 .policy = nl80211_policy,
13340 .flags = GENL_UNS_ADMIN_PERM,
13341 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13342 NL80211_FLAG_NEED_RTNL,
13343 },
13344 {
13345 .cmd = NL80211_CMD_SET_MPATH,
13346 .doit = nl80211_set_mpath,
13347 .policy = nl80211_policy,
13348 .flags = GENL_UNS_ADMIN_PERM,
13349 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13350 NL80211_FLAG_NEED_RTNL,
13351 },
13352 {
13353 .cmd = NL80211_CMD_NEW_MPATH,
13354 .doit = nl80211_new_mpath,
13355 .policy = nl80211_policy,
13356 .flags = GENL_UNS_ADMIN_PERM,
13357 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13358 NL80211_FLAG_NEED_RTNL,
13359 },
13360 {
13361 .cmd = NL80211_CMD_DEL_MPATH,
13362 .doit = nl80211_del_mpath,
13363 .policy = nl80211_policy,
13364 .flags = GENL_UNS_ADMIN_PERM,
13365 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13366 NL80211_FLAG_NEED_RTNL,
13367 },
13368 {
13369 .cmd = NL80211_CMD_SET_BSS,
13370 .doit = nl80211_set_bss,
13371 .policy = nl80211_policy,
13372 .flags = GENL_UNS_ADMIN_PERM,
13373 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13374 NL80211_FLAG_NEED_RTNL,
13375 },
13376 {
13377 .cmd = NL80211_CMD_GET_REG,
13378 .doit = nl80211_get_reg_do,
13379 .dumpit = nl80211_get_reg_dump,
13380 .policy = nl80211_policy,
13381 .internal_flags = NL80211_FLAG_NEED_RTNL,
13382 /* can be retrieved by unprivileged users */
13383 },
13384#ifdef CONFIG_CFG80211_CRDA_SUPPORT
13385 {
13386 .cmd = NL80211_CMD_SET_REG,
13387 .doit = nl80211_set_reg,
13388 .policy = nl80211_policy,
13389 .flags = GENL_ADMIN_PERM,
13390 .internal_flags = NL80211_FLAG_NEED_RTNL,
13391 },
13392#endif
13393 {
13394 .cmd = NL80211_CMD_REQ_SET_REG,
13395 .doit = nl80211_req_set_reg,
13396 .policy = nl80211_policy,
13397 .flags = GENL_ADMIN_PERM,
13398 },
13399 {
13400 .cmd = NL80211_CMD_RELOAD_REGDB,
13401 .doit = nl80211_reload_regdb,
13402 .policy = nl80211_policy,
13403 .flags = GENL_ADMIN_PERM,
13404 },
13405 {
13406 .cmd = NL80211_CMD_GET_MESH_CONFIG,
13407 .doit = nl80211_get_mesh_config,
13408 .policy = nl80211_policy,
13409 /* can be retrieved by unprivileged users */
13410 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13411 NL80211_FLAG_NEED_RTNL,
13412 },
13413 {
13414 .cmd = NL80211_CMD_SET_MESH_CONFIG,
13415 .doit = nl80211_update_mesh_config,
13416 .policy = nl80211_policy,
13417 .flags = GENL_UNS_ADMIN_PERM,
13418 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13419 NL80211_FLAG_NEED_RTNL,
13420 },
13421 {
13422 .cmd = NL80211_CMD_TRIGGER_SCAN,
13423 .doit = nl80211_trigger_scan,
13424 .policy = nl80211_policy,
13425 .flags = GENL_UNS_ADMIN_PERM,
13426 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13427 NL80211_FLAG_NEED_RTNL,
13428 },
13429 {
13430 .cmd = NL80211_CMD_ABORT_SCAN,
13431 .doit = nl80211_abort_scan,
13432 .policy = nl80211_policy,
13433 .flags = GENL_UNS_ADMIN_PERM,
13434 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13435 NL80211_FLAG_NEED_RTNL,
13436 },
13437 {
13438 .cmd = NL80211_CMD_GET_SCAN,
13439 .policy = nl80211_policy,
13440 .dumpit = nl80211_dump_scan,
13441 },
13442 {
13443 .cmd = NL80211_CMD_START_SCHED_SCAN,
13444 .doit = nl80211_start_sched_scan,
13445 .policy = nl80211_policy,
13446 .flags = GENL_UNS_ADMIN_PERM,
13447 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13448 NL80211_FLAG_NEED_RTNL,
13449 },
13450 {
13451 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
13452 .doit = nl80211_stop_sched_scan,
13453 .policy = nl80211_policy,
13454 .flags = GENL_UNS_ADMIN_PERM,
13455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13456 NL80211_FLAG_NEED_RTNL,
13457 },
13458 {
13459 .cmd = NL80211_CMD_AUTHENTICATE,
13460 .doit = nl80211_authenticate,
13461 .policy = nl80211_policy,
13462 .flags = GENL_UNS_ADMIN_PERM,
13463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13464 NL80211_FLAG_NEED_RTNL |
13465 NL80211_FLAG_CLEAR_SKB,
13466 },
13467 {
13468 .cmd = NL80211_CMD_ASSOCIATE,
13469 .doit = nl80211_associate,
13470 .policy = nl80211_policy,
13471 .flags = GENL_UNS_ADMIN_PERM,
13472 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13473 NL80211_FLAG_NEED_RTNL |
13474 NL80211_FLAG_CLEAR_SKB,
13475 },
13476 {
13477 .cmd = NL80211_CMD_DEAUTHENTICATE,
13478 .doit = nl80211_deauthenticate,
13479 .policy = nl80211_policy,
13480 .flags = GENL_UNS_ADMIN_PERM,
13481 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13482 NL80211_FLAG_NEED_RTNL,
13483 },
13484 {
13485 .cmd = NL80211_CMD_DISASSOCIATE,
13486 .doit = nl80211_disassociate,
13487 .policy = nl80211_policy,
13488 .flags = GENL_UNS_ADMIN_PERM,
13489 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13490 NL80211_FLAG_NEED_RTNL,
13491 },
13492 {
13493 .cmd = NL80211_CMD_JOIN_IBSS,
13494 .doit = nl80211_join_ibss,
13495 .policy = nl80211_policy,
13496 .flags = GENL_UNS_ADMIN_PERM,
13497 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13498 NL80211_FLAG_NEED_RTNL,
13499 },
13500 {
13501 .cmd = NL80211_CMD_LEAVE_IBSS,
13502 .doit = nl80211_leave_ibss,
13503 .policy = nl80211_policy,
13504 .flags = GENL_UNS_ADMIN_PERM,
13505 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13506 NL80211_FLAG_NEED_RTNL,
13507 },
13508#ifdef CONFIG_NL80211_TESTMODE
13509 {
13510 .cmd = NL80211_CMD_TESTMODE,
13511 .doit = nl80211_testmode_do,
13512 .dumpit = nl80211_testmode_dump,
13513 .policy = nl80211_policy,
13514 .flags = GENL_UNS_ADMIN_PERM,
13515 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13516 NL80211_FLAG_NEED_RTNL,
13517 },
13518#endif
13519 {
13520 .cmd = NL80211_CMD_CONNECT,
13521 .doit = nl80211_connect,
13522 .policy = nl80211_policy,
13523 .flags = GENL_UNS_ADMIN_PERM,
13524 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13525 NL80211_FLAG_NEED_RTNL |
13526 NL80211_FLAG_CLEAR_SKB,
13527 },
13528 {
13529 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
13530 .doit = nl80211_update_connect_params,
13531 .policy = nl80211_policy,
13532 .flags = GENL_ADMIN_PERM,
13533 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13534 NL80211_FLAG_NEED_RTNL |
13535 NL80211_FLAG_CLEAR_SKB,
13536 },
13537 {
13538 .cmd = NL80211_CMD_DISCONNECT,
13539 .doit = nl80211_disconnect,
13540 .policy = nl80211_policy,
13541 .flags = GENL_UNS_ADMIN_PERM,
13542 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13543 NL80211_FLAG_NEED_RTNL,
13544 },
13545 {
13546 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
13547 .doit = nl80211_wiphy_netns,
13548 .policy = nl80211_policy,
13549 .flags = GENL_UNS_ADMIN_PERM,
13550 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13551 NL80211_FLAG_NEED_RTNL,
13552 },
13553 {
13554 .cmd = NL80211_CMD_GET_SURVEY,
13555 .policy = nl80211_policy,
13556 .dumpit = nl80211_dump_survey,
13557 },
13558 {
13559 .cmd = NL80211_CMD_SET_PMKSA,
13560 .doit = nl80211_setdel_pmksa,
13561 .policy = nl80211_policy,
13562 .flags = GENL_UNS_ADMIN_PERM,
13563 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13564 NL80211_FLAG_NEED_RTNL |
13565 NL80211_FLAG_CLEAR_SKB,
13566 },
13567 {
13568 .cmd = NL80211_CMD_DEL_PMKSA,
13569 .doit = nl80211_setdel_pmksa,
13570 .policy = nl80211_policy,
13571 .flags = GENL_UNS_ADMIN_PERM,
13572 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13573 NL80211_FLAG_NEED_RTNL,
13574 },
13575 {
13576 .cmd = NL80211_CMD_FLUSH_PMKSA,
13577 .doit = nl80211_flush_pmksa,
13578 .policy = nl80211_policy,
13579 .flags = GENL_UNS_ADMIN_PERM,
13580 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13581 NL80211_FLAG_NEED_RTNL,
13582 },
13583 {
13584 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
13585 .doit = nl80211_remain_on_channel,
13586 .policy = nl80211_policy,
13587 .flags = GENL_UNS_ADMIN_PERM,
13588 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13589 NL80211_FLAG_NEED_RTNL,
13590 },
13591 {
13592 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13593 .doit = nl80211_cancel_remain_on_channel,
13594 .policy = nl80211_policy,
13595 .flags = GENL_UNS_ADMIN_PERM,
13596 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13597 NL80211_FLAG_NEED_RTNL,
13598 },
13599 {
13600 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
13601 .doit = nl80211_set_tx_bitrate_mask,
13602 .policy = nl80211_policy,
13603 .flags = GENL_UNS_ADMIN_PERM,
13604 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13605 NL80211_FLAG_NEED_RTNL,
13606 },
13607 {
13608 .cmd = NL80211_CMD_REGISTER_FRAME,
13609 .doit = nl80211_register_mgmt,
13610 .policy = nl80211_policy,
13611 .flags = GENL_UNS_ADMIN_PERM,
13612 .internal_flags = NL80211_FLAG_NEED_WDEV |
13613 NL80211_FLAG_NEED_RTNL,
13614 },
13615 {
13616 .cmd = NL80211_CMD_FRAME,
13617 .doit = nl80211_tx_mgmt,
13618 .policy = nl80211_policy,
13619 .flags = GENL_UNS_ADMIN_PERM,
13620 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13621 NL80211_FLAG_NEED_RTNL,
13622 },
13623 {
13624 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
13625 .doit = nl80211_tx_mgmt_cancel_wait,
13626 .policy = nl80211_policy,
13627 .flags = GENL_UNS_ADMIN_PERM,
13628 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13629 NL80211_FLAG_NEED_RTNL,
13630 },
13631 {
13632 .cmd = NL80211_CMD_SET_POWER_SAVE,
13633 .doit = nl80211_set_power_save,
13634 .policy = nl80211_policy,
13635 .flags = GENL_UNS_ADMIN_PERM,
13636 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13637 NL80211_FLAG_NEED_RTNL,
13638 },
13639 {
13640 .cmd = NL80211_CMD_GET_POWER_SAVE,
13641 .doit = nl80211_get_power_save,
13642 .policy = nl80211_policy,
13643 /* can be retrieved by unprivileged users */
13644 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13645 NL80211_FLAG_NEED_RTNL,
13646 },
13647 {
13648 .cmd = NL80211_CMD_SET_CQM,
13649 .doit = nl80211_set_cqm,
13650 .policy = nl80211_policy,
13651 .flags = GENL_UNS_ADMIN_PERM,
13652 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13653 NL80211_FLAG_NEED_RTNL,
13654 },
13655 {
13656 .cmd = NL80211_CMD_SET_CHANNEL,
13657 .doit = nl80211_set_channel,
13658 .policy = nl80211_policy,
13659 .flags = GENL_UNS_ADMIN_PERM,
13660 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13661 NL80211_FLAG_NEED_RTNL,
13662 },
13663 {
13664 .cmd = NL80211_CMD_SET_WDS_PEER,
13665 .doit = nl80211_set_wds_peer,
13666 .policy = nl80211_policy,
13667 .flags = GENL_UNS_ADMIN_PERM,
13668 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13669 NL80211_FLAG_NEED_RTNL,
13670 },
13671 {
13672 .cmd = NL80211_CMD_JOIN_MESH,
13673 .doit = nl80211_join_mesh,
13674 .policy = nl80211_policy,
13675 .flags = GENL_UNS_ADMIN_PERM,
13676 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13677 NL80211_FLAG_NEED_RTNL,
13678 },
13679 {
13680 .cmd = NL80211_CMD_LEAVE_MESH,
13681 .doit = nl80211_leave_mesh,
13682 .policy = nl80211_policy,
13683 .flags = GENL_UNS_ADMIN_PERM,
13684 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13685 NL80211_FLAG_NEED_RTNL,
13686 },
13687 {
13688 .cmd = NL80211_CMD_JOIN_OCB,
13689 .doit = nl80211_join_ocb,
13690 .policy = nl80211_policy,
13691 .flags = GENL_UNS_ADMIN_PERM,
13692 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13693 NL80211_FLAG_NEED_RTNL,
13694 },
13695 {
13696 .cmd = NL80211_CMD_LEAVE_OCB,
13697 .doit = nl80211_leave_ocb,
13698 .policy = nl80211_policy,
13699 .flags = GENL_UNS_ADMIN_PERM,
13700 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13701 NL80211_FLAG_NEED_RTNL,
13702 },
13703#ifdef CONFIG_PM
13704 {
13705 .cmd = NL80211_CMD_GET_WOWLAN,
13706 .doit = nl80211_get_wowlan,
13707 .policy = nl80211_policy,
13708 /* can be retrieved by unprivileged users */
13709 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13710 NL80211_FLAG_NEED_RTNL,
13711 },
13712 {
13713 .cmd = NL80211_CMD_SET_WOWLAN,
13714 .doit = nl80211_set_wowlan,
13715 .policy = nl80211_policy,
13716 .flags = GENL_UNS_ADMIN_PERM,
13717 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13718 NL80211_FLAG_NEED_RTNL,
13719 },
13720#endif
13721 {
13722 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13723 .doit = nl80211_set_rekey_data,
13724 .policy = nl80211_policy,
13725 .flags = GENL_UNS_ADMIN_PERM,
13726 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13727 NL80211_FLAG_NEED_RTNL |
13728 NL80211_FLAG_CLEAR_SKB,
13729 },
13730 {
13731 .cmd = NL80211_CMD_TDLS_MGMT,
13732 .doit = nl80211_tdls_mgmt,
13733 .policy = nl80211_policy,
13734 .flags = GENL_UNS_ADMIN_PERM,
13735 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13736 NL80211_FLAG_NEED_RTNL,
13737 },
13738 {
13739 .cmd = NL80211_CMD_TDLS_OPER,
13740 .doit = nl80211_tdls_oper,
13741 .policy = nl80211_policy,
13742 .flags = GENL_UNS_ADMIN_PERM,
13743 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13744 NL80211_FLAG_NEED_RTNL,
13745 },
13746 {
13747 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13748 .doit = nl80211_register_unexpected_frame,
13749 .policy = nl80211_policy,
13750 .flags = GENL_UNS_ADMIN_PERM,
13751 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13752 NL80211_FLAG_NEED_RTNL,
13753 },
13754 {
13755 .cmd = NL80211_CMD_PROBE_CLIENT,
13756 .doit = nl80211_probe_client,
13757 .policy = nl80211_policy,
13758 .flags = GENL_UNS_ADMIN_PERM,
13759 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13760 NL80211_FLAG_NEED_RTNL,
13761 },
13762 {
13763 .cmd = NL80211_CMD_REGISTER_BEACONS,
13764 .doit = nl80211_register_beacons,
13765 .policy = nl80211_policy,
13766 .flags = GENL_UNS_ADMIN_PERM,
13767 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13768 NL80211_FLAG_NEED_RTNL,
13769 },
13770 {
13771 .cmd = NL80211_CMD_SET_NOACK_MAP,
13772 .doit = nl80211_set_noack_map,
13773 .policy = nl80211_policy,
13774 .flags = GENL_UNS_ADMIN_PERM,
13775 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13776 NL80211_FLAG_NEED_RTNL,
13777 },
13778 {
13779 .cmd = NL80211_CMD_START_P2P_DEVICE,
13780 .doit = nl80211_start_p2p_device,
13781 .policy = nl80211_policy,
13782 .flags = GENL_UNS_ADMIN_PERM,
13783 .internal_flags = NL80211_FLAG_NEED_WDEV |
13784 NL80211_FLAG_NEED_RTNL,
13785 },
13786 {
13787 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13788 .doit = nl80211_stop_p2p_device,
13789 .policy = nl80211_policy,
13790 .flags = GENL_UNS_ADMIN_PERM,
13791 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13792 NL80211_FLAG_NEED_RTNL,
13793 },
13794 {
13795 .cmd = NL80211_CMD_START_NAN,
13796 .doit = nl80211_start_nan,
13797 .policy = nl80211_policy,
13798 .flags = GENL_ADMIN_PERM,
13799 .internal_flags = NL80211_FLAG_NEED_WDEV |
13800 NL80211_FLAG_NEED_RTNL,
13801 },
13802 {
13803 .cmd = NL80211_CMD_STOP_NAN,
13804 .doit = nl80211_stop_nan,
13805 .policy = nl80211_policy,
13806 .flags = GENL_ADMIN_PERM,
13807 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13808 NL80211_FLAG_NEED_RTNL,
13809 },
13810 {
13811 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13812 .doit = nl80211_nan_add_func,
13813 .policy = nl80211_policy,
13814 .flags = GENL_ADMIN_PERM,
13815 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13816 NL80211_FLAG_NEED_RTNL,
13817 },
13818 {
13819 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13820 .doit = nl80211_nan_del_func,
13821 .policy = nl80211_policy,
13822 .flags = GENL_ADMIN_PERM,
13823 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13824 NL80211_FLAG_NEED_RTNL,
13825 },
13826 {
13827 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13828 .doit = nl80211_nan_change_config,
13829 .policy = nl80211_policy,
13830 .flags = GENL_ADMIN_PERM,
13831 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13832 NL80211_FLAG_NEED_RTNL,
13833 },
13834 {
13835 .cmd = NL80211_CMD_SET_MCAST_RATE,
13836 .doit = nl80211_set_mcast_rate,
13837 .policy = nl80211_policy,
13838 .flags = GENL_UNS_ADMIN_PERM,
13839 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13840 NL80211_FLAG_NEED_RTNL,
13841 },
13842 {
13843 .cmd = NL80211_CMD_SET_MAC_ACL,
13844 .doit = nl80211_set_mac_acl,
13845 .policy = nl80211_policy,
13846 .flags = GENL_UNS_ADMIN_PERM,
13847 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13848 NL80211_FLAG_NEED_RTNL,
13849 },
13850 {
13851 .cmd = NL80211_CMD_RADAR_DETECT,
13852 .doit = nl80211_start_radar_detection,
13853 .policy = nl80211_policy,
13854 .flags = GENL_UNS_ADMIN_PERM,
13855 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13856 NL80211_FLAG_NEED_RTNL,
13857 },
13858 {
13859 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13860 .doit = nl80211_get_protocol_features,
13861 .policy = nl80211_policy,
13862 },
13863 {
13864 .cmd = NL80211_CMD_UPDATE_FT_IES,
13865 .doit = nl80211_update_ft_ies,
13866 .policy = nl80211_policy,
13867 .flags = GENL_UNS_ADMIN_PERM,
13868 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13869 NL80211_FLAG_NEED_RTNL,
13870 },
13871 {
13872 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13873 .doit = nl80211_crit_protocol_start,
13874 .policy = nl80211_policy,
13875 .flags = GENL_UNS_ADMIN_PERM,
13876 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13877 NL80211_FLAG_NEED_RTNL,
13878 },
13879 {
13880 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13881 .doit = nl80211_crit_protocol_stop,
13882 .policy = nl80211_policy,
13883 .flags = GENL_UNS_ADMIN_PERM,
13884 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13885 NL80211_FLAG_NEED_RTNL,
13886 },
13887 {
13888 .cmd = NL80211_CMD_GET_COALESCE,
13889 .doit = nl80211_get_coalesce,
13890 .policy = nl80211_policy,
13891 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13892 NL80211_FLAG_NEED_RTNL,
13893 },
13894 {
13895 .cmd = NL80211_CMD_SET_COALESCE,
13896 .doit = nl80211_set_coalesce,
13897 .policy = nl80211_policy,
13898 .flags = GENL_UNS_ADMIN_PERM,
13899 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13900 NL80211_FLAG_NEED_RTNL,
13901 },
13902 {
13903 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13904 .doit = nl80211_channel_switch,
13905 .policy = nl80211_policy,
13906 .flags = GENL_UNS_ADMIN_PERM,
13907 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13908 NL80211_FLAG_NEED_RTNL,
13909 },
13910 {
13911 .cmd = NL80211_CMD_VENDOR,
13912 .doit = nl80211_vendor_cmd,
13913 .dumpit = nl80211_vendor_cmd_dump,
13914 .policy = nl80211_policy,
13915 .flags = GENL_UNS_ADMIN_PERM,
13916 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13917 NL80211_FLAG_NEED_RTNL |
13918 NL80211_FLAG_CLEAR_SKB,
13919 },
13920 {
13921 .cmd = NL80211_CMD_SET_QOS_MAP,
13922 .doit = nl80211_set_qos_map,
13923 .policy = nl80211_policy,
13924 .flags = GENL_UNS_ADMIN_PERM,
13925 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13926 NL80211_FLAG_NEED_RTNL,
13927 },
13928 {
13929 .cmd = NL80211_CMD_ADD_TX_TS,
13930 .doit = nl80211_add_tx_ts,
13931 .policy = nl80211_policy,
13932 .flags = GENL_UNS_ADMIN_PERM,
13933 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13934 NL80211_FLAG_NEED_RTNL,
13935 },
13936 {
13937 .cmd = NL80211_CMD_DEL_TX_TS,
13938 .doit = nl80211_del_tx_ts,
13939 .policy = nl80211_policy,
13940 .flags = GENL_UNS_ADMIN_PERM,
13941 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13942 NL80211_FLAG_NEED_RTNL,
13943 },
13944 {
13945 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13946 .doit = nl80211_tdls_channel_switch,
13947 .policy = nl80211_policy,
13948 .flags = GENL_UNS_ADMIN_PERM,
13949 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13950 NL80211_FLAG_NEED_RTNL,
13951 },
13952 {
13953 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13954 .doit = nl80211_tdls_cancel_channel_switch,
13955 .policy = nl80211_policy,
13956 .flags = GENL_UNS_ADMIN_PERM,
13957 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13958 NL80211_FLAG_NEED_RTNL,
13959 },
13960 {
13961 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13962 .doit = nl80211_set_multicast_to_unicast,
13963 .policy = nl80211_policy,
13964 .flags = GENL_UNS_ADMIN_PERM,
13965 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13966 NL80211_FLAG_NEED_RTNL,
13967 },
13968 {
13969 .cmd = NL80211_CMD_SET_PMK,
13970 .doit = nl80211_set_pmk,
13971 .policy = nl80211_policy,
13972 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13973 NL80211_FLAG_NEED_RTNL |
13974 NL80211_FLAG_CLEAR_SKB,
13975 },
13976 {
13977 .cmd = NL80211_CMD_DEL_PMK,
13978 .doit = nl80211_del_pmk,
13979 .policy = nl80211_policy,
13980 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13981 NL80211_FLAG_NEED_RTNL,
13982 },
13983 {
13984 .cmd = NL80211_CMD_EXTERNAL_AUTH,
13985 .doit = nl80211_external_auth,
13986 .policy = nl80211_policy,
13987 .flags = GENL_ADMIN_PERM,
13988 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13989 NL80211_FLAG_NEED_RTNL,
13990 },
13991 {
13992 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
13993 .doit = nl80211_tx_control_port,
13994 .policy = nl80211_policy,
13995 .flags = GENL_UNS_ADMIN_PERM,
13996 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13997 NL80211_FLAG_NEED_RTNL,
13998 },
13999};
14000
14001static struct genl_family nl80211_fam __ro_after_init = {
14002 .name = NL80211_GENL_NAME, /* have users key off the name instead */
14003 .hdrsize = 0, /* no private header */
14004 .version = 1, /* no particular meaning now */
14005 .maxattr = NL80211_ATTR_MAX,
14006 .netnsok = true,
14007 .pre_doit = nl80211_pre_doit,
14008 .post_doit = nl80211_post_doit,
14009 .module = THIS_MODULE,
14010 .ops = nl80211_ops,
14011 .n_ops = ARRAY_SIZE(nl80211_ops),
14012 .mcgrps = nl80211_mcgrps,
14013 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14014};
14015
14016/* notification functions */
14017
14018void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14019 enum nl80211_commands cmd)
14020{
14021 struct sk_buff *msg;
14022 struct nl80211_dump_wiphy_state state = {};
14023
14024 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14025 cmd != NL80211_CMD_DEL_WIPHY);
14026
14027 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14028 if (!msg)
14029 return;
14030
14031 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14032 nlmsg_free(msg);
14033 return;
14034 }
14035
14036 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14037 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14038}
14039
14040void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14041 struct wireless_dev *wdev,
14042 enum nl80211_commands cmd)
14043{
14044 struct sk_buff *msg;
14045
14046 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
14047 cmd != NL80211_CMD_DEL_INTERFACE);
14048
14049 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14050 if (!msg)
14051 return;
14052
14053 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
14054 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
14055 nlmsg_free(msg);
14056 return;
14057 }
14058
14059 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14060 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14061}
14062
14063static int nl80211_add_scan_req(struct sk_buff *msg,
14064 struct cfg80211_registered_device *rdev)
14065{
14066 struct cfg80211_scan_request *req = rdev->scan_req;
14067 struct nlattr *nest;
14068 int i;
14069
14070 if (WARN_ON(!req))
14071 return 0;
14072
14073 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
14074 if (!nest)
14075 goto nla_put_failure;
14076 for (i = 0; i < req->n_ssids; i++) {
14077 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14078 goto nla_put_failure;
14079 }
14080 nla_nest_end(msg, nest);
14081
14082 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14083 if (!nest)
14084 goto nla_put_failure;
14085 for (i = 0; i < req->n_channels; i++) {
14086 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14087 goto nla_put_failure;
14088 }
14089 nla_nest_end(msg, nest);
14090
14091 if (req->ie &&
14092 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14093 goto nla_put_failure;
14094
14095 if (req->flags &&
14096 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14097 goto nla_put_failure;
14098
14099 if (req->info.scan_start_tsf &&
14100 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14101 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14102 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14103 req->info.tsf_bssid)))
14104 goto nla_put_failure;
14105
14106 return 0;
14107 nla_put_failure:
14108 return -ENOBUFS;
14109}
14110
14111static int nl80211_prep_scan_msg(struct sk_buff *msg,
14112 struct cfg80211_registered_device *rdev,
14113 struct wireless_dev *wdev,
14114 u32 portid, u32 seq, int flags,
14115 u32 cmd)
14116{
14117 void *hdr;
14118
14119 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14120 if (!hdr)
14121 return -1;
14122
14123 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14124 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14125 wdev->netdev->ifindex)) ||
14126 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14127 NL80211_ATTR_PAD))
14128 goto nla_put_failure;
14129
14130 /* ignore errors and send incomplete event anyway */
14131 nl80211_add_scan_req(msg, rdev);
14132
14133 genlmsg_end(msg, hdr);
14134 return 0;
14135
14136 nla_put_failure:
14137 genlmsg_cancel(msg, hdr);
14138 return -EMSGSIZE;
14139}
14140
14141static int
14142nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14143 struct cfg80211_sched_scan_request *req, u32 cmd)
14144{
14145 void *hdr;
14146
14147 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14148 if (!hdr)
14149 return -1;
14150
14151 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14152 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14153 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14154 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14155 NL80211_ATTR_PAD))
14156 goto nla_put_failure;
14157
14158 genlmsg_end(msg, hdr);
14159 return 0;
14160
14161 nla_put_failure:
14162 genlmsg_cancel(msg, hdr);
14163 return -EMSGSIZE;
14164}
14165
14166void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14167 struct wireless_dev *wdev)
14168{
14169 struct sk_buff *msg;
14170
14171 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14172 if (!msg)
14173 return;
14174
14175 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14176 NL80211_CMD_TRIGGER_SCAN) < 0) {
14177 nlmsg_free(msg);
14178 return;
14179 }
14180
14181 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14182 NL80211_MCGRP_SCAN, GFP_KERNEL);
14183}
14184
14185struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14186 struct wireless_dev *wdev, bool aborted)
14187{
14188 struct sk_buff *msg;
14189
14190 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14191 if (!msg)
14192 return NULL;
14193
14194 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14195 aborted ? NL80211_CMD_SCAN_ABORTED :
14196 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14197 nlmsg_free(msg);
14198 return NULL;
14199 }
14200
14201 return msg;
14202}
14203
14204/* send message created by nl80211_build_scan_msg() */
14205void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14206 struct sk_buff *msg)
14207{
14208 if (!msg)
14209 return;
14210
14211 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14212 NL80211_MCGRP_SCAN, GFP_KERNEL);
14213}
14214
14215void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14216{
14217 struct sk_buff *msg;
14218
14219 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14220 if (!msg)
14221 return;
14222
14223 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14224 nlmsg_free(msg);
14225 return;
14226 }
14227
14228 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14229 NL80211_MCGRP_SCAN, GFP_KERNEL);
14230}
14231
14232static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14233 struct regulatory_request *request)
14234{
14235 /* Userspace can always count this one always being set */
14236 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14237 goto nla_put_failure;
14238
14239 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14240 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14241 NL80211_REGDOM_TYPE_WORLD))
14242 goto nla_put_failure;
14243 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14244 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14245 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14246 goto nla_put_failure;
14247 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14248 request->intersect) {
14249 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14250 NL80211_REGDOM_TYPE_INTERSECTION))
14251 goto nla_put_failure;
14252 } else {
14253 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14254 NL80211_REGDOM_TYPE_COUNTRY) ||
14255 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14256 request->alpha2))
14257 goto nla_put_failure;
14258 }
14259
14260 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14261 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14262
14263 if (wiphy &&
14264 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14265 goto nla_put_failure;
14266
14267 if (wiphy &&
14268 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14269 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14270 goto nla_put_failure;
14271 }
14272
14273 return true;
14274
14275nla_put_failure:
14276 return false;
14277}
14278
14279/*
14280 * This can happen on global regulatory changes or device specific settings
14281 * based on custom regulatory domains.
14282 */
14283void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14284 struct regulatory_request *request)
14285{
14286 struct sk_buff *msg;
14287 void *hdr;
14288
14289 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14290 if (!msg)
14291 return;
14292
14293 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14294 if (!hdr) {
14295 nlmsg_free(msg);
14296 return;
14297 }
14298
14299 if (nl80211_reg_change_event_fill(msg, request) == false)
14300 goto nla_put_failure;
14301
14302 genlmsg_end(msg, hdr);
14303
14304 rcu_read_lock();
14305 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14306 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14307 rcu_read_unlock();
14308
14309 return;
14310
14311nla_put_failure:
14312 nlmsg_free(msg);
14313}
14314
14315static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14316 struct net_device *netdev,
14317 const u8 *buf, size_t len,
14318 enum nl80211_commands cmd, gfp_t gfp,
14319 int uapsd_queues)
14320{
14321 struct sk_buff *msg;
14322 void *hdr;
14323
14324 msg = nlmsg_new(100 + len, gfp);
14325 if (!msg)
14326 return;
14327
14328 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14329 if (!hdr) {
14330 nlmsg_free(msg);
14331 return;
14332 }
14333
14334 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14335 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14336 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
14337 goto nla_put_failure;
14338
14339 if (uapsd_queues >= 0) {
14340 struct nlattr *nla_wmm =
14341 nla_nest_start(msg, NL80211_ATTR_STA_WME);
14342 if (!nla_wmm)
14343 goto nla_put_failure;
14344
14345 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
14346 uapsd_queues))
14347 goto nla_put_failure;
14348
14349 nla_nest_end(msg, nla_wmm);
14350 }
14351
14352 genlmsg_end(msg, hdr);
14353
14354 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14355 NL80211_MCGRP_MLME, gfp);
14356 return;
14357
14358 nla_put_failure:
14359 nlmsg_free(msg);
14360}
14361
14362void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
14363 struct net_device *netdev, const u8 *buf,
14364 size_t len, gfp_t gfp)
14365{
14366 nl80211_send_mlme_event(rdev, netdev, buf, len,
14367 NL80211_CMD_AUTHENTICATE, gfp, -1);
14368}
14369
14370void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
14371 struct net_device *netdev, const u8 *buf,
14372 size_t len, gfp_t gfp, int uapsd_queues)
14373{
14374 nl80211_send_mlme_event(rdev, netdev, buf, len,
14375 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
14376}
14377
14378void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
14379 struct net_device *netdev, const u8 *buf,
14380 size_t len, gfp_t gfp)
14381{
14382 nl80211_send_mlme_event(rdev, netdev, buf, len,
14383 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
14384}
14385
14386void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
14387 struct net_device *netdev, const u8 *buf,
14388 size_t len, gfp_t gfp)
14389{
14390 nl80211_send_mlme_event(rdev, netdev, buf, len,
14391 NL80211_CMD_DISASSOCIATE, gfp, -1);
14392}
14393
14394void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
14395 size_t len)
14396{
14397 struct wireless_dev *wdev = dev->ieee80211_ptr;
14398 struct wiphy *wiphy = wdev->wiphy;
14399 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14400 const struct ieee80211_mgmt *mgmt = (void *)buf;
14401 u32 cmd;
14402
14403 if (WARN_ON(len < 2))
14404 return;
14405
14406 if (ieee80211_is_deauth(mgmt->frame_control))
14407 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
14408 else
14409 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
14410
14411 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
14412 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
14413}
14414EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
14415
14416static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
14417 struct net_device *netdev, int cmd,
14418 const u8 *addr, gfp_t gfp)
14419{
14420 struct sk_buff *msg;
14421 void *hdr;
14422
14423 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14424 if (!msg)
14425 return;
14426
14427 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14428 if (!hdr) {
14429 nlmsg_free(msg);
14430 return;
14431 }
14432
14433 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14434 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14435 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14436 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14437 goto nla_put_failure;
14438
14439 genlmsg_end(msg, hdr);
14440
14441 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14442 NL80211_MCGRP_MLME, gfp);
14443 return;
14444
14445 nla_put_failure:
14446 nlmsg_free(msg);
14447}
14448
14449void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
14450 struct net_device *netdev, const u8 *addr,
14451 gfp_t gfp)
14452{
14453 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
14454 addr, gfp);
14455}
14456
14457void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
14458 struct net_device *netdev, const u8 *addr,
14459 gfp_t gfp)
14460{
14461 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
14462 addr, gfp);
14463}
14464
14465void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
14466 struct net_device *netdev,
14467 struct cfg80211_connect_resp_params *cr,
14468 gfp_t gfp)
14469{
14470 struct sk_buff *msg;
14471 void *hdr;
14472
14473 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
14474 cr->fils.kek_len + cr->fils.pmk_len +
14475 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14476 if (!msg)
14477 return;
14478
14479 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
14480 if (!hdr) {
14481 nlmsg_free(msg);
14482 return;
14483 }
14484
14485 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14486 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14487 (cr->bssid &&
14488 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
14489 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
14490 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
14491 cr->status) ||
14492 (cr->status < 0 &&
14493 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14494 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
14495 cr->timeout_reason))) ||
14496 (cr->req_ie &&
14497 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
14498 (cr->resp_ie &&
14499 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
14500 cr->resp_ie)) ||
14501 (cr->fils.update_erp_next_seq_num &&
14502 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14503 cr->fils.erp_next_seq_num)) ||
14504 (cr->status == WLAN_STATUS_SUCCESS &&
14505 ((cr->fils.kek &&
14506 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
14507 cr->fils.kek)) ||
14508 (cr->fils.pmk &&
14509 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
14510 (cr->fils.pmkid &&
14511 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
14512 goto nla_put_failure;
14513
14514 genlmsg_end(msg, hdr);
14515
14516 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14517 NL80211_MCGRP_MLME, gfp);
14518 return;
14519
14520 nla_put_failure:
14521 nlmsg_free(msg);
14522}
14523
14524void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
14525 struct net_device *netdev,
14526 struct cfg80211_roam_info *info, gfp_t gfp)
14527{
14528 struct sk_buff *msg;
14529 void *hdr;
14530 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
14531
14532 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
14533 info->fils.kek_len + info->fils.pmk_len +
14534 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14535 if (!msg)
14536 return;
14537
14538 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
14539 if (!hdr) {
14540 nlmsg_free(msg);
14541 return;
14542 }
14543
14544 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14545 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14546 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
14547 (info->req_ie &&
14548 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
14549 info->req_ie)) ||
14550 (info->resp_ie &&
14551 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
14552 info->resp_ie)) ||
14553 (info->fils.update_erp_next_seq_num &&
14554 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14555 info->fils.erp_next_seq_num)) ||
14556 (info->fils.kek &&
14557 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
14558 info->fils.kek)) ||
14559 (info->fils.pmk &&
14560 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
14561 (info->fils.pmkid &&
14562 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
14563 goto nla_put_failure;
14564
14565 genlmsg_end(msg, hdr);
14566
14567 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14568 NL80211_MCGRP_MLME, gfp);
14569 return;
14570
14571 nla_put_failure:
14572 nlmsg_free(msg);
14573}
14574
14575void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
14576 struct net_device *netdev, const u8 *bssid)
14577{
14578 struct sk_buff *msg;
14579 void *hdr;
14580
14581 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14582 if (!msg)
14583 return;
14584
14585 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
14586 if (!hdr) {
14587 nlmsg_free(msg);
14588 return;
14589 }
14590
14591 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14592 goto nla_put_failure;
14593
14594 genlmsg_end(msg, hdr);
14595
14596 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14597 NL80211_MCGRP_MLME, GFP_KERNEL);
14598 return;
14599
14600 nla_put_failure:
14601 nlmsg_free(msg);
14602}
14603
14604void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
14605 struct net_device *netdev, u16 reason,
14606 const u8 *ie, size_t ie_len, bool from_ap)
14607{
14608 struct sk_buff *msg;
14609 void *hdr;
14610
14611 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
14612 if (!msg)
14613 return;
14614
14615 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
14616 if (!hdr) {
14617 nlmsg_free(msg);
14618 return;
14619 }
14620
14621 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14622 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14623 (reason &&
14624 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
14625 (from_ap &&
14626 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
14627 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
14628 goto nla_put_failure;
14629
14630 genlmsg_end(msg, hdr);
14631
14632 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14633 NL80211_MCGRP_MLME, GFP_KERNEL);
14634 return;
14635
14636 nla_put_failure:
14637 nlmsg_free(msg);
14638}
14639
14640void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
14641 struct net_device *netdev, const u8 *bssid,
14642 gfp_t gfp)
14643{
14644 struct sk_buff *msg;
14645 void *hdr;
14646
14647 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14648 if (!msg)
14649 return;
14650
14651 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
14652 if (!hdr) {
14653 nlmsg_free(msg);
14654 return;
14655 }
14656
14657 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14658 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14659 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14660 goto nla_put_failure;
14661
14662 genlmsg_end(msg, hdr);
14663
14664 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14665 NL80211_MCGRP_MLME, gfp);
14666 return;
14667
14668 nla_put_failure:
14669 nlmsg_free(msg);
14670}
14671
14672void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14673 const u8* ie, u8 ie_len, gfp_t gfp)
14674{
14675 struct wireless_dev *wdev = dev->ieee80211_ptr;
14676 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14677 struct sk_buff *msg;
14678 void *hdr;
14679
14680 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14681 return;
14682
14683 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14684
14685 msg = nlmsg_new(100 + ie_len, gfp);
14686 if (!msg)
14687 return;
14688
14689 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14690 if (!hdr) {
14691 nlmsg_free(msg);
14692 return;
14693 }
14694
14695 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14696 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14697 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14698 (ie_len && ie &&
14699 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14700 goto nla_put_failure;
14701
14702 genlmsg_end(msg, hdr);
14703
14704 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14705 NL80211_MCGRP_MLME, gfp);
14706 return;
14707
14708 nla_put_failure:
14709 nlmsg_free(msg);
14710}
14711EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14712
14713void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14714 struct net_device *netdev, const u8 *addr,
14715 enum nl80211_key_type key_type, int key_id,
14716 const u8 *tsc, gfp_t gfp)
14717{
14718 struct sk_buff *msg;
14719 void *hdr;
14720
14721 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14722 if (!msg)
14723 return;
14724
14725 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14726 if (!hdr) {
14727 nlmsg_free(msg);
14728 return;
14729 }
14730
14731 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14732 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14733 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14734 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14735 (key_id != -1 &&
14736 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14737 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14738 goto nla_put_failure;
14739
14740 genlmsg_end(msg, hdr);
14741
14742 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14743 NL80211_MCGRP_MLME, gfp);
14744 return;
14745
14746 nla_put_failure:
14747 nlmsg_free(msg);
14748}
14749
14750void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14751 struct ieee80211_channel *channel_before,
14752 struct ieee80211_channel *channel_after)
14753{
14754 struct sk_buff *msg;
14755 void *hdr;
14756 struct nlattr *nl_freq;
14757
14758 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14759 if (!msg)
14760 return;
14761
14762 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14763 if (!hdr) {
14764 nlmsg_free(msg);
14765 return;
14766 }
14767
14768 /*
14769 * Since we are applying the beacon hint to a wiphy we know its
14770 * wiphy_idx is valid
14771 */
14772 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14773 goto nla_put_failure;
14774
14775 /* Before */
14776 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14777 if (!nl_freq)
14778 goto nla_put_failure;
14779
14780 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
14781 goto nla_put_failure;
14782 nla_nest_end(msg, nl_freq);
14783
14784 /* After */
14785 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14786 if (!nl_freq)
14787 goto nla_put_failure;
14788
14789 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
14790 goto nla_put_failure;
14791 nla_nest_end(msg, nl_freq);
14792
14793 genlmsg_end(msg, hdr);
14794
14795 rcu_read_lock();
14796 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14797 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14798 rcu_read_unlock();
14799
14800 return;
14801
14802nla_put_failure:
14803 nlmsg_free(msg);
14804}
14805
14806static void nl80211_send_remain_on_chan_event(
14807 int cmd, struct cfg80211_registered_device *rdev,
14808 struct wireless_dev *wdev, u64 cookie,
14809 struct ieee80211_channel *chan,
14810 unsigned int duration, gfp_t gfp)
14811{
14812 struct sk_buff *msg;
14813 void *hdr;
14814
14815 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14816 if (!msg)
14817 return;
14818
14819 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14820 if (!hdr) {
14821 nlmsg_free(msg);
14822 return;
14823 }
14824
14825 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14826 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14827 wdev->netdev->ifindex)) ||
14828 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14829 NL80211_ATTR_PAD) ||
14830 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14831 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14832 NL80211_CHAN_NO_HT) ||
14833 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14834 NL80211_ATTR_PAD))
14835 goto nla_put_failure;
14836
14837 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14838 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14839 goto nla_put_failure;
14840
14841 genlmsg_end(msg, hdr);
14842
14843 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14844 NL80211_MCGRP_MLME, gfp);
14845 return;
14846
14847 nla_put_failure:
14848 nlmsg_free(msg);
14849}
14850
14851void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14852 struct ieee80211_channel *chan,
14853 unsigned int duration, gfp_t gfp)
14854{
14855 struct wiphy *wiphy = wdev->wiphy;
14856 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14857
14858 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14859 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14860 rdev, wdev, cookie, chan,
14861 duration, gfp);
14862}
14863EXPORT_SYMBOL(cfg80211_ready_on_channel);
14864
14865void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14866 struct ieee80211_channel *chan,
14867 gfp_t gfp)
14868{
14869 struct wiphy *wiphy = wdev->wiphy;
14870 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14871
14872 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14873 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14874 rdev, wdev, cookie, chan, 0, gfp);
14875}
14876EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14877
14878void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14879 struct station_info *sinfo, gfp_t gfp)
14880{
14881 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14882 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14883 struct sk_buff *msg;
14884
14885 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14886
14887 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14888 if (!msg)
14889 return;
14890
14891 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14892 rdev, dev, mac_addr, sinfo) < 0) {
14893 nlmsg_free(msg);
14894 return;
14895 }
14896
14897 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14898 NL80211_MCGRP_MLME, gfp);
14899}
14900EXPORT_SYMBOL(cfg80211_new_sta);
14901
14902void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14903 struct station_info *sinfo, gfp_t gfp)
14904{
14905 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14906 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14907 struct sk_buff *msg;
14908 struct station_info empty_sinfo = {};
14909
14910 if (!sinfo)
14911 sinfo = &empty_sinfo;
14912
14913 trace_cfg80211_del_sta(dev, mac_addr);
14914
14915 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14916 if (!msg) {
14917 cfg80211_sinfo_release_content(sinfo);
14918 return;
14919 }
14920
14921 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14922 rdev, dev, mac_addr, sinfo) < 0) {
14923 nlmsg_free(msg);
14924 return;
14925 }
14926
14927 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14928 NL80211_MCGRP_MLME, gfp);
14929}
14930EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14931
14932void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14933 enum nl80211_connect_failed_reason reason,
14934 gfp_t gfp)
14935{
14936 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14937 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14938 struct sk_buff *msg;
14939 void *hdr;
14940
14941 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14942 if (!msg)
14943 return;
14944
14945 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14946 if (!hdr) {
14947 nlmsg_free(msg);
14948 return;
14949 }
14950
14951 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14952 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14953 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14954 goto nla_put_failure;
14955
14956 genlmsg_end(msg, hdr);
14957
14958 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14959 NL80211_MCGRP_MLME, gfp);
14960 return;
14961
14962 nla_put_failure:
14963 nlmsg_free(msg);
14964}
14965EXPORT_SYMBOL(cfg80211_conn_failed);
14966
14967static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14968 const u8 *addr, gfp_t gfp)
14969{
14970 struct wireless_dev *wdev = dev->ieee80211_ptr;
14971 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14972 struct sk_buff *msg;
14973 void *hdr;
14974 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14975
14976 if (!nlportid)
14977 return false;
14978
14979 msg = nlmsg_new(100, gfp);
14980 if (!msg)
14981 return true;
14982
14983 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14984 if (!hdr) {
14985 nlmsg_free(msg);
14986 return true;
14987 }
14988
14989 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14990 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14991 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14992 goto nla_put_failure;
14993
14994 genlmsg_end(msg, hdr);
14995 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14996 return true;
14997
14998 nla_put_failure:
14999 nlmsg_free(msg);
15000 return true;
15001}
15002
15003bool cfg80211_rx_spurious_frame(struct net_device *dev,
15004 const u8 *addr, gfp_t gfp)
15005{
15006 struct wireless_dev *wdev = dev->ieee80211_ptr;
15007 bool ret;
15008
15009 trace_cfg80211_rx_spurious_frame(dev, addr);
15010
15011 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15012 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15013 trace_cfg80211_return_bool(false);
15014 return false;
15015 }
15016 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15017 addr, gfp);
15018 trace_cfg80211_return_bool(ret);
15019 return ret;
15020}
15021EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15022
15023bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15024 const u8 *addr, gfp_t gfp)
15025{
15026 struct wireless_dev *wdev = dev->ieee80211_ptr;
15027 bool ret;
15028
15029 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15030
15031 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15032 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15033 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15034 trace_cfg80211_return_bool(false);
15035 return false;
15036 }
15037 ret = __nl80211_unexpected_frame(dev,
15038 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15039 addr, gfp);
15040 trace_cfg80211_return_bool(ret);
15041 return ret;
15042}
15043EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15044
15045int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15046 struct wireless_dev *wdev, u32 nlportid,
15047 int freq, int sig_dbm,
15048 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15049{
15050 struct net_device *netdev = wdev->netdev;
15051 struct sk_buff *msg;
15052 void *hdr;
15053
15054 msg = nlmsg_new(100 + len, gfp);
15055 if (!msg)
15056 return -ENOMEM;
15057
15058 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15059 if (!hdr) {
15060 nlmsg_free(msg);
15061 return -ENOMEM;
15062 }
15063
15064 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15065 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15066 netdev->ifindex)) ||
15067 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15068 NL80211_ATTR_PAD) ||
15069 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15070 (sig_dbm &&
15071 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15072 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15073 (flags &&
15074 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15075 goto nla_put_failure;
15076
15077 genlmsg_end(msg, hdr);
15078
15079 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15080
15081 nla_put_failure:
15082 nlmsg_free(msg);
15083 return -ENOBUFS;
15084}
15085
15086void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15087 const u8 *buf, size_t len, bool ack, gfp_t gfp)
15088{
15089 struct wiphy *wiphy = wdev->wiphy;
15090 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15091 struct net_device *netdev = wdev->netdev;
15092 struct sk_buff *msg;
15093 void *hdr;
15094
15095 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15096
15097 msg = nlmsg_new(100 + len, gfp);
15098 if (!msg)
15099 return;
15100
15101 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15102 if (!hdr) {
15103 nlmsg_free(msg);
15104 return;
15105 }
15106
15107 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15108 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15109 netdev->ifindex)) ||
15110 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15111 NL80211_ATTR_PAD) ||
15112 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15113 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15114 NL80211_ATTR_PAD) ||
15115 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15116 goto nla_put_failure;
15117
15118 genlmsg_end(msg, hdr);
15119
15120 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15121 NL80211_MCGRP_MLME, gfp);
15122 return;
15123
15124 nla_put_failure:
15125 nlmsg_free(msg);
15126}
15127EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15128
15129static int __nl80211_rx_control_port(struct net_device *dev,
15130 struct sk_buff *skb,
15131 bool unencrypted, gfp_t gfp)
15132{
15133 struct wireless_dev *wdev = dev->ieee80211_ptr;
15134 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15135 struct ethhdr *ehdr = eth_hdr(skb);
15136 const u8 *addr = ehdr->h_source;
15137 u16 proto = be16_to_cpu(skb->protocol);
15138 struct sk_buff *msg;
15139 void *hdr;
15140 struct nlattr *frame;
15141
15142 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15143
15144 if (!nlportid)
15145 return -ENOENT;
15146
15147 msg = nlmsg_new(100 + skb->len, gfp);
15148 if (!msg)
15149 return -ENOMEM;
15150
15151 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15152 if (!hdr) {
15153 nlmsg_free(msg);
15154 return -ENOBUFS;
15155 }
15156
15157 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15158 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15159 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15160 NL80211_ATTR_PAD) ||
15161 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15162 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15163 (unencrypted && nla_put_flag(msg,
15164 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15165 goto nla_put_failure;
15166
15167 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15168 if (!frame)
15169 goto nla_put_failure;
15170
15171 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15172 genlmsg_end(msg, hdr);
15173
15174 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15175
15176 nla_put_failure:
15177 nlmsg_free(msg);
15178 return -ENOBUFS;
15179}
15180
15181bool cfg80211_rx_control_port(struct net_device *dev,
15182 struct sk_buff *skb, bool unencrypted)
15183{
15184 int ret;
15185
15186 trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15187 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15188 trace_cfg80211_return_bool(ret == 0);
15189 return ret == 0;
15190}
15191EXPORT_SYMBOL(cfg80211_rx_control_port);
15192
15193static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15194 const char *mac, gfp_t gfp)
15195{
15196 struct wireless_dev *wdev = dev->ieee80211_ptr;
15197 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15198 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15199 void **cb;
15200
15201 if (!msg)
15202 return NULL;
15203
15204 cb = (void **)msg->cb;
15205
15206 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15207 if (!cb[0]) {
15208 nlmsg_free(msg);
15209 return NULL;
15210 }
15211
15212 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15213 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15214 goto nla_put_failure;
15215
15216 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15217 goto nla_put_failure;
15218
15219 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
15220 if (!cb[1])
15221 goto nla_put_failure;
15222
15223 cb[2] = rdev;
15224
15225 return msg;
15226 nla_put_failure:
15227 nlmsg_free(msg);
15228 return NULL;
15229}
15230
15231static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15232{
15233 void **cb = (void **)msg->cb;
15234 struct cfg80211_registered_device *rdev = cb[2];
15235
15236 nla_nest_end(msg, cb[1]);
15237 genlmsg_end(msg, cb[0]);
15238
15239 memset(msg->cb, 0, sizeof(msg->cb));
15240
15241 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15242 NL80211_MCGRP_MLME, gfp);
15243}
15244
15245void cfg80211_cqm_rssi_notify(struct net_device *dev,
15246 enum nl80211_cqm_rssi_threshold_event rssi_event,
15247 s32 rssi_level, gfp_t gfp)
15248{
15249 struct sk_buff *msg;
15250 struct wireless_dev *wdev = dev->ieee80211_ptr;
15251 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15252
15253 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15254
15255 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15256 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15257 return;
15258
15259 if (wdev->cqm_config) {
15260 wdev->cqm_config->last_rssi_event_value = rssi_level;
15261
15262 cfg80211_cqm_rssi_update(rdev, dev);
15263
15264 if (rssi_level == 0)
15265 rssi_level = wdev->cqm_config->last_rssi_event_value;
15266 }
15267
15268 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15269 if (!msg)
15270 return;
15271
15272 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15273 rssi_event))
15274 goto nla_put_failure;
15275
15276 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15277 rssi_level))
15278 goto nla_put_failure;
15279
15280 cfg80211_send_cqm(msg, gfp);
15281
15282 return;
15283
15284 nla_put_failure:
15285 nlmsg_free(msg);
15286}
15287EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15288
15289void cfg80211_cqm_txe_notify(struct net_device *dev,
15290 const u8 *peer, u32 num_packets,
15291 u32 rate, u32 intvl, gfp_t gfp)
15292{
15293 struct sk_buff *msg;
15294
15295 msg = cfg80211_prepare_cqm(dev, peer, gfp);
15296 if (!msg)
15297 return;
15298
15299 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15300 goto nla_put_failure;
15301
15302 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15303 goto nla_put_failure;
15304
15305 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15306 goto nla_put_failure;
15307
15308 cfg80211_send_cqm(msg, gfp);
15309 return;
15310
15311 nla_put_failure:
15312 nlmsg_free(msg);
15313}
15314EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
15315
15316void cfg80211_cqm_pktloss_notify(struct net_device *dev,
15317 const u8 *peer, u32 num_packets, gfp_t gfp)
15318{
15319 struct sk_buff *msg;
15320
15321 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
15322
15323 msg = cfg80211_prepare_cqm(dev, peer, gfp);
15324 if (!msg)
15325 return;
15326
15327 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
15328 goto nla_put_failure;
15329
15330 cfg80211_send_cqm(msg, gfp);
15331 return;
15332
15333 nla_put_failure:
15334 nlmsg_free(msg);
15335}
15336EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
15337
15338void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
15339{
15340 struct sk_buff *msg;
15341
15342 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15343 if (!msg)
15344 return;
15345
15346 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
15347 goto nla_put_failure;
15348
15349 cfg80211_send_cqm(msg, gfp);
15350 return;
15351
15352 nla_put_failure:
15353 nlmsg_free(msg);
15354}
15355EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
15356
15357static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
15358 struct net_device *netdev, const u8 *bssid,
15359 const u8 *replay_ctr, gfp_t gfp)
15360{
15361 struct sk_buff *msg;
15362 struct nlattr *rekey_attr;
15363 void *hdr;
15364
15365 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15366 if (!msg)
15367 return;
15368
15369 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
15370 if (!hdr) {
15371 nlmsg_free(msg);
15372 return;
15373 }
15374
15375 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15376 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15377 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15378 goto nla_put_failure;
15379
15380 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
15381 if (!rekey_attr)
15382 goto nla_put_failure;
15383
15384 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
15385 NL80211_REPLAY_CTR_LEN, replay_ctr))
15386 goto nla_put_failure;
15387
15388 nla_nest_end(msg, rekey_attr);
15389
15390 genlmsg_end(msg, hdr);
15391
15392 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15393 NL80211_MCGRP_MLME, gfp);
15394 return;
15395
15396 nla_put_failure:
15397 nlmsg_free(msg);
15398}
15399
15400void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
15401 const u8 *replay_ctr, gfp_t gfp)
15402{
15403 struct wireless_dev *wdev = dev->ieee80211_ptr;
15404 struct wiphy *wiphy = wdev->wiphy;
15405 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15406
15407 trace_cfg80211_gtk_rekey_notify(dev, bssid);
15408 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
15409}
15410EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
15411
15412static void
15413nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
15414 struct net_device *netdev, int index,
15415 const u8 *bssid, bool preauth, gfp_t gfp)
15416{
15417 struct sk_buff *msg;
15418 struct nlattr *attr;
15419 void *hdr;
15420
15421 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15422 if (!msg)
15423 return;
15424
15425 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
15426 if (!hdr) {
15427 nlmsg_free(msg);
15428 return;
15429 }
15430
15431 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15432 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15433 goto nla_put_failure;
15434
15435 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
15436 if (!attr)
15437 goto nla_put_failure;
15438
15439 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
15440 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
15441 (preauth &&
15442 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
15443 goto nla_put_failure;
15444
15445 nla_nest_end(msg, attr);
15446
15447 genlmsg_end(msg, hdr);
15448
15449 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15450 NL80211_MCGRP_MLME, gfp);
15451 return;
15452
15453 nla_put_failure:
15454 nlmsg_free(msg);
15455}
15456
15457void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
15458 const u8 *bssid, bool preauth, gfp_t gfp)
15459{
15460 struct wireless_dev *wdev = dev->ieee80211_ptr;
15461 struct wiphy *wiphy = wdev->wiphy;
15462 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15463
15464 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
15465 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
15466}
15467EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
15468
15469static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
15470 struct net_device *netdev,
15471 struct cfg80211_chan_def *chandef,
15472 gfp_t gfp,
15473 enum nl80211_commands notif,
15474 u8 count)
15475{
15476 struct sk_buff *msg;
15477 void *hdr;
15478
15479 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15480 if (!msg)
15481 return;
15482
15483 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
15484 if (!hdr) {
15485 nlmsg_free(msg);
15486 return;
15487 }
15488
15489 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15490 goto nla_put_failure;
15491
15492 if (nl80211_send_chandef(msg, chandef))
15493 goto nla_put_failure;
15494
15495 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
15496 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
15497 goto nla_put_failure;
15498
15499 genlmsg_end(msg, hdr);
15500
15501 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15502 NL80211_MCGRP_MLME, gfp);
15503 return;
15504
15505 nla_put_failure:
15506 nlmsg_free(msg);
15507}
15508
15509void cfg80211_ch_switch_notify(struct net_device *dev,
15510 struct cfg80211_chan_def *chandef)
15511{
15512 struct wireless_dev *wdev = dev->ieee80211_ptr;
15513 struct wiphy *wiphy = wdev->wiphy;
15514 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15515
15516 ASSERT_WDEV_LOCK(wdev);
15517
15518 trace_cfg80211_ch_switch_notify(dev, chandef);
15519
15520 wdev->chandef = *chandef;
15521 wdev->preset_chandef = *chandef;
15522
15523 if (wdev->iftype == NL80211_IFTYPE_STATION &&
15524 !WARN_ON(!wdev->current_bss))
15525 wdev->current_bss->pub.channel = chandef->chan;
15526
15527 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15528 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
15529}
15530EXPORT_SYMBOL(cfg80211_ch_switch_notify);
15531
15532void cfg80211_ch_switch_started_notify(struct net_device *dev,
15533 struct cfg80211_chan_def *chandef,
15534 u8 count)
15535{
15536 struct wireless_dev *wdev = dev->ieee80211_ptr;
15537 struct wiphy *wiphy = wdev->wiphy;
15538 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15539
15540 trace_cfg80211_ch_switch_started_notify(dev, chandef);
15541
15542 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15543 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
15544}
15545EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
15546
15547void
15548nl80211_radar_notify(struct cfg80211_registered_device *rdev,
15549 const struct cfg80211_chan_def *chandef,
15550 enum nl80211_radar_event event,
15551 struct net_device *netdev, gfp_t gfp)
15552{
15553 struct sk_buff *msg;
15554 void *hdr;
15555
15556 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15557 if (!msg)
15558 return;
15559
15560 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
15561 if (!hdr) {
15562 nlmsg_free(msg);
15563 return;
15564 }
15565
15566 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15567 goto nla_put_failure;
15568
15569 /* NOP and radar events don't need a netdev parameter */
15570 if (netdev) {
15571 struct wireless_dev *wdev = netdev->ieee80211_ptr;
15572
15573 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15574 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15575 NL80211_ATTR_PAD))
15576 goto nla_put_failure;
15577 }
15578
15579 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
15580 goto nla_put_failure;
15581
15582 if (nl80211_send_chandef(msg, chandef))
15583 goto nla_put_failure;
15584
15585 genlmsg_end(msg, hdr);
15586
15587 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15588 NL80211_MCGRP_MLME, gfp);
15589 return;
15590
15591 nla_put_failure:
15592 nlmsg_free(msg);
15593}
15594
15595void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
15596 struct sta_opmode_info *sta_opmode,
15597 gfp_t gfp)
15598{
15599 struct sk_buff *msg;
15600 struct wireless_dev *wdev = dev->ieee80211_ptr;
15601 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15602 void *hdr;
15603
15604 if (WARN_ON(!mac))
15605 return;
15606
15607 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15608 if (!msg)
15609 return;
15610
15611 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
15612 if (!hdr) {
15613 nlmsg_free(msg);
15614 return;
15615 }
15616
15617 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15618 goto nla_put_failure;
15619
15620 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15621 goto nla_put_failure;
15622
15623 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15624 goto nla_put_failure;
15625
15626 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
15627 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
15628 goto nla_put_failure;
15629
15630 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
15631 nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
15632 goto nla_put_failure;
15633
15634 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
15635 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
15636 goto nla_put_failure;
15637
15638 genlmsg_end(msg, hdr);
15639
15640 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15641 NL80211_MCGRP_MLME, gfp);
15642
15643 return;
15644
15645nla_put_failure:
15646 nlmsg_free(msg);
15647}
15648EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
15649
15650void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
15651 u64 cookie, bool acked, s32 ack_signal,
15652 bool is_valid_ack_signal, gfp_t gfp)
15653{
15654 struct wireless_dev *wdev = dev->ieee80211_ptr;
15655 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15656 struct sk_buff *msg;
15657 void *hdr;
15658
15659 trace_cfg80211_probe_status(dev, addr, cookie, acked);
15660
15661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15662
15663 if (!msg)
15664 return;
15665
15666 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
15667 if (!hdr) {
15668 nlmsg_free(msg);
15669 return;
15670 }
15671
15672 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15673 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15674 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15675 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15676 NL80211_ATTR_PAD) ||
15677 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
15678 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
15679 ack_signal)))
15680 goto nla_put_failure;
15681
15682 genlmsg_end(msg, hdr);
15683
15684 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15685 NL80211_MCGRP_MLME, gfp);
15686 return;
15687
15688 nla_put_failure:
15689 nlmsg_free(msg);
15690}
15691EXPORT_SYMBOL(cfg80211_probe_status);
15692
15693void cfg80211_report_obss_beacon(struct wiphy *wiphy,
15694 const u8 *frame, size_t len,
15695 int freq, int sig_dbm)
15696{
15697 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15698 struct sk_buff *msg;
15699 void *hdr;
15700 struct cfg80211_beacon_registration *reg;
15701
15702 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
15703
15704 spin_lock_bh(&rdev->beacon_registrations_lock);
15705 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
15706 msg = nlmsg_new(len + 100, GFP_ATOMIC);
15707 if (!msg) {
15708 spin_unlock_bh(&rdev->beacon_registrations_lock);
15709 return;
15710 }
15711
15712 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15713 if (!hdr)
15714 goto nla_put_failure;
15715
15716 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15717 (freq &&
15718 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
15719 (sig_dbm &&
15720 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15721 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
15722 goto nla_put_failure;
15723
15724 genlmsg_end(msg, hdr);
15725
15726 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
15727 }
15728 spin_unlock_bh(&rdev->beacon_registrations_lock);
15729 return;
15730
15731 nla_put_failure:
15732 spin_unlock_bh(&rdev->beacon_registrations_lock);
15733 nlmsg_free(msg);
15734}
15735EXPORT_SYMBOL(cfg80211_report_obss_beacon);
15736
15737#ifdef CONFIG_PM
15738static int cfg80211_net_detect_results(struct sk_buff *msg,
15739 struct cfg80211_wowlan_wakeup *wakeup)
15740{
15741 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
15742 struct nlattr *nl_results, *nl_match, *nl_freqs;
15743 int i, j;
15744
15745 nl_results = nla_nest_start(
15746 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
15747 if (!nl_results)
15748 return -EMSGSIZE;
15749
15750 for (i = 0; i < nd->n_matches; i++) {
15751 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
15752
15753 nl_match = nla_nest_start(msg, i);
15754 if (!nl_match)
15755 break;
15756
15757 /* The SSID attribute is optional in nl80211, but for
15758 * simplicity reasons it's always present in the
15759 * cfg80211 structure. If a driver can't pass the
15760 * SSID, that needs to be changed. A zero length SSID
15761 * is still a valid SSID (wildcard), so it cannot be
15762 * used for this purpose.
15763 */
15764 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
15765 match->ssid.ssid)) {
15766 nla_nest_cancel(msg, nl_match);
15767 goto out;
15768 }
15769
15770 if (match->n_channels) {
15771 nl_freqs = nla_nest_start(
15772 msg, NL80211_ATTR_SCAN_FREQUENCIES);
15773 if (!nl_freqs) {
15774 nla_nest_cancel(msg, nl_match);
15775 goto out;
15776 }
15777
15778 for (j = 0; j < match->n_channels; j++) {
15779 if (nla_put_u32(msg, j, match->channels[j])) {
15780 nla_nest_cancel(msg, nl_freqs);
15781 nla_nest_cancel(msg, nl_match);
15782 goto out;
15783 }
15784 }
15785
15786 nla_nest_end(msg, nl_freqs);
15787 }
15788
15789 nla_nest_end(msg, nl_match);
15790 }
15791
15792out:
15793 nla_nest_end(msg, nl_results);
15794 return 0;
15795}
15796
15797void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15798 struct cfg80211_wowlan_wakeup *wakeup,
15799 gfp_t gfp)
15800{
15801 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15802 struct sk_buff *msg;
15803 void *hdr;
15804 int size = 200;
15805
15806 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15807
15808 if (wakeup)
15809 size += wakeup->packet_present_len;
15810
15811 msg = nlmsg_new(size, gfp);
15812 if (!msg)
15813 return;
15814
15815 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15816 if (!hdr)
15817 goto free_msg;
15818
15819 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15820 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15821 NL80211_ATTR_PAD))
15822 goto free_msg;
15823
15824 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15825 wdev->netdev->ifindex))
15826 goto free_msg;
15827
15828 if (wakeup) {
15829 struct nlattr *reasons;
15830
15831 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15832 if (!reasons)
15833 goto free_msg;
15834
15835 if (wakeup->disconnect &&
15836 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15837 goto free_msg;
15838 if (wakeup->magic_pkt &&
15839 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15840 goto free_msg;
15841 if (wakeup->gtk_rekey_failure &&
15842 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15843 goto free_msg;
15844 if (wakeup->eap_identity_req &&
15845 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15846 goto free_msg;
15847 if (wakeup->four_way_handshake &&
15848 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15849 goto free_msg;
15850 if (wakeup->rfkill_release &&
15851 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15852 goto free_msg;
15853
15854 if (wakeup->pattern_idx >= 0 &&
15855 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15856 wakeup->pattern_idx))
15857 goto free_msg;
15858
15859 if (wakeup->tcp_match &&
15860 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15861 goto free_msg;
15862
15863 if (wakeup->tcp_connlost &&
15864 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15865 goto free_msg;
15866
15867 if (wakeup->tcp_nomoretokens &&
15868 nla_put_flag(msg,
15869 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15870 goto free_msg;
15871
15872 if (wakeup->packet) {
15873 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15874 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15875
15876 if (!wakeup->packet_80211) {
15877 pkt_attr =
15878 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15879 len_attr =
15880 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15881 }
15882
15883 if (wakeup->packet_len &&
15884 nla_put_u32(msg, len_attr, wakeup->packet_len))
15885 goto free_msg;
15886
15887 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15888 wakeup->packet))
15889 goto free_msg;
15890 }
15891
15892 if (wakeup->net_detect &&
15893 cfg80211_net_detect_results(msg, wakeup))
15894 goto free_msg;
15895
15896 nla_nest_end(msg, reasons);
15897 }
15898
15899 genlmsg_end(msg, hdr);
15900
15901 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15902 NL80211_MCGRP_MLME, gfp);
15903 return;
15904
15905 free_msg:
15906 nlmsg_free(msg);
15907}
15908EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15909#endif
15910
15911void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15912 enum nl80211_tdls_operation oper,
15913 u16 reason_code, gfp_t gfp)
15914{
15915 struct wireless_dev *wdev = dev->ieee80211_ptr;
15916 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15917 struct sk_buff *msg;
15918 void *hdr;
15919
15920 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15921 reason_code);
15922
15923 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15924 if (!msg)
15925 return;
15926
15927 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15928 if (!hdr) {
15929 nlmsg_free(msg);
15930 return;
15931 }
15932
15933 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15934 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15935 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15936 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15937 (reason_code > 0 &&
15938 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15939 goto nla_put_failure;
15940
15941 genlmsg_end(msg, hdr);
15942
15943 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15944 NL80211_MCGRP_MLME, gfp);
15945 return;
15946
15947 nla_put_failure:
15948 nlmsg_free(msg);
15949}
15950EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15951
15952static int nl80211_netlink_notify(struct notifier_block * nb,
15953 unsigned long state,
15954 void *_notify)
15955{
15956 struct netlink_notify *notify = _notify;
15957 struct cfg80211_registered_device *rdev;
15958 struct wireless_dev *wdev;
15959 struct cfg80211_beacon_registration *reg, *tmp;
15960
15961 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15962 return NOTIFY_DONE;
15963
15964 rcu_read_lock();
15965
15966 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15967 struct cfg80211_sched_scan_request *sched_scan_req;
15968
15969 list_for_each_entry_rcu(sched_scan_req,
15970 &rdev->sched_scan_req_list,
15971 list) {
15972 if (sched_scan_req->owner_nlportid == notify->portid) {
15973 sched_scan_req->nl_owner_dead = true;
15974 schedule_work(&rdev->sched_scan_stop_wk);
15975 }
15976 }
15977
15978 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15979 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15980
15981 if (wdev->owner_nlportid == notify->portid) {
15982 wdev->nl_owner_dead = true;
15983 schedule_work(&rdev->destroy_work);
15984 } else if (wdev->conn_owner_nlportid == notify->portid) {
15985 schedule_work(&wdev->disconnect_wk);
15986 }
15987 }
15988
15989 spin_lock_bh(&rdev->beacon_registrations_lock);
15990 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15991 list) {
15992 if (reg->nlportid == notify->portid) {
15993 list_del(&reg->list);
15994 kfree(reg);
15995 break;
15996 }
15997 }
15998 spin_unlock_bh(&rdev->beacon_registrations_lock);
15999 }
16000
16001 rcu_read_unlock();
16002
16003 /*
16004 * It is possible that the user space process that is controlling the
16005 * indoor setting disappeared, so notify the regulatory core.
16006 */
16007 regulatory_netlink_notify(notify->portid);
16008 return NOTIFY_OK;
16009}
16010
16011static struct notifier_block nl80211_netlink_notifier = {
16012 .notifier_call = nl80211_netlink_notify,
16013};
16014
16015void cfg80211_ft_event(struct net_device *netdev,
16016 struct cfg80211_ft_event_params *ft_event)
16017{
16018 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16019 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16020 struct sk_buff *msg;
16021 void *hdr;
16022
16023 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16024
16025 if (!ft_event->target_ap)
16026 return;
16027
16028 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16029 GFP_KERNEL);
16030 if (!msg)
16031 return;
16032
16033 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16034 if (!hdr)
16035 goto out;
16036
16037 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16038 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16039 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16040 goto out;
16041
16042 if (ft_event->ies &&
16043 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16044 goto out;
16045 if (ft_event->ric_ies &&
16046 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16047 ft_event->ric_ies))
16048 goto out;
16049
16050 genlmsg_end(msg, hdr);
16051
16052 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16053 NL80211_MCGRP_MLME, GFP_KERNEL);
16054 return;
16055 out:
16056 nlmsg_free(msg);
16057}
16058EXPORT_SYMBOL(cfg80211_ft_event);
16059
16060void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16061{
16062 struct cfg80211_registered_device *rdev;
16063 struct sk_buff *msg;
16064 void *hdr;
16065 u32 nlportid;
16066
16067 rdev = wiphy_to_rdev(wdev->wiphy);
16068 if (!rdev->crit_proto_nlportid)
16069 return;
16070
16071 nlportid = rdev->crit_proto_nlportid;
16072 rdev->crit_proto_nlportid = 0;
16073
16074 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16075 if (!msg)
16076 return;
16077
16078 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16079 if (!hdr)
16080 goto nla_put_failure;
16081
16082 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16083 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16084 NL80211_ATTR_PAD))
16085 goto nla_put_failure;
16086
16087 genlmsg_end(msg, hdr);
16088
16089 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16090 return;
16091
16092 nla_put_failure:
16093 nlmsg_free(msg);
16094}
16095EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16096
16097void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16098{
16099 struct wiphy *wiphy = wdev->wiphy;
16100 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16101 struct sk_buff *msg;
16102 void *hdr;
16103
16104 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16105 if (!msg)
16106 return;
16107
16108 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16109 if (!hdr)
16110 goto out;
16111
16112 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16113 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16114 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16115 NL80211_ATTR_PAD))
16116 goto out;
16117
16118 genlmsg_end(msg, hdr);
16119
16120 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16121 NL80211_MCGRP_MLME, GFP_KERNEL);
16122 return;
16123 out:
16124 nlmsg_free(msg);
16125}
16126
16127int cfg80211_external_auth_request(struct net_device *dev,
16128 struct cfg80211_external_auth_params *params,
16129 gfp_t gfp)
16130{
16131 struct wireless_dev *wdev = dev->ieee80211_ptr;
16132 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16133 struct sk_buff *msg;
16134 void *hdr;
16135
16136 if (!wdev->conn_owner_nlportid)
16137 return -EINVAL;
16138
16139 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16140 if (!msg)
16141 return -ENOMEM;
16142
16143 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16144 if (!hdr)
16145 goto nla_put_failure;
16146
16147 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16148 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16149 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16150 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16151 params->action) ||
16152 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16153 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16154 params->ssid.ssid))
16155 goto nla_put_failure;
16156
16157 genlmsg_end(msg, hdr);
16158 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16159 wdev->conn_owner_nlportid);
16160 return 0;
16161
16162 nla_put_failure:
16163 nlmsg_free(msg);
16164 return -ENOBUFS;
16165}
16166EXPORT_SYMBOL(cfg80211_external_auth_request);
16167
16168/* initialisation/exit functions */
16169
16170int __init nl80211_init(void)
16171{
16172 int err;
16173
16174 err = genl_register_family(&nl80211_fam);
16175 if (err)
16176 return err;
16177
16178 err = netlink_register_notifier(&nl80211_netlink_notifier);
16179 if (err)
16180 goto err_out;
16181
16182 return 0;
16183 err_out:
16184 genl_unregister_family(&nl80211_fam);
16185 return err;
16186}
16187
16188void nl80211_exit(void)
16189{
16190 netlink_unregister_notifier(&nl80211_netlink_notifier);
16191 genl_unregister_family(&nl80211_fam);
16192}